VHC Network MILVAX Refresher Update
Transcription
VHC Network MILVAX Refresher Update
Non-IgE Mediated Vaccine Reactions 2012 Updates Renata J. M. Engler, MD, FAAAAI, FACAI AAAAI 2013 San Antonio, TX 4804 Workshop: 25 Feb 2013 @ 4:45-6:00 PM Non-IgE-Mediated Adverse Reactions to Vaccines Renata J. M. Engler, MD, FACP, FAAAAI, FACAAI Director, Vaccine Healthcare Centers Network Division of MILVAX/ US Army Public Health Command Walter Reed National Military Medical Center Professor of Medicine/Pediatrics, Allergy-Immunology Uniformed Services University of the Health Sciences Bethesda, MD Learning Objectives Participants will be able to . . . • Discuss non-IgE mediated adverse reactions to vaccines and their management • Describe the 2011 Institute of Medicine findings on causality of adverse event-vaccine pairs reviewed including a new approach to categorizing evidence and classifying level of evidence for or against a causal association. • Understand the importance of live virus vaccines and their risk to some but not all immunodeficient patients. Conflict of Interest, Financial Disclosures and Disclaimers Financial: None Research: grants through NIH/CDMRP Legal Consult/Expert Witness: None Organizational: Army Medical Department Gifts: None Other: None National Faculty Education Initiative Training Updates • Training completed 2012 Dec 29: www.acme-nfei.org Disclaimer: The views expressed in this presentation are those of the author and do not reflect the official policy of the Army/Navy/Air Force Medical Departments, Department of the Army/Navy/Air Force, Department of Defense, U.S. Government, or other federal agencies. Vaccines & 21st Century Evolving Standards & Knowledge • Prescription drugs – Diversity of responses seen post-marketing – Vaccines as “orphan prescription drugs” – Apply standards for prescribing any drug to vaccines • Safe and effective: population to individual – FDA & Public Health/CDC perspectives – Operational medicine perspective – Provider perspective – Patient/Individual vaccinee perspective • Need: improved life cycle safety surveillance – Understanding gender, racial/ethnic/genetic differences – Evidence-based practice improvements Knowledge Gaps & Unmet Needs Beyond Epidemiology and FDA Guided Studies “Undermining the public trust . . “ 1st: “inadequate ongoing, credible education of the public and health professions concerning the known and unknown benefits and risks of vaccines.” 2nd: grossly insufficient investment in research on the safety of immunization. Adverse Event Following Immunization AEFI – International “VAERS” Side Effect Versus “Serious or Impacting” Adverse Reaction Impact Criteria? Level of Pain? Quality of Life? 2009 Newsweek Report By Dr. Louis Z. Cooper, Heidi Larson and Dr. Samuel L. Katz | Newsweek Feb 23, 2009 Duration? Recurrence? http://www.newsweek.com/id/185986 From the desk of RJM Engler, MD: 2013 1 Non-IgE Mediated Vaccine Reactions 2012 Updates Adverse Events Following Immunization (AEFI) Many Items to Consider for Complex Reactions Vaccinology/Immunology & Personalized Medicine 2012 NIH Jordan Report Cause or Coincidence? www.niaid.nih.gov/topics/vaccines/Pages/Jordan2012.aspx The Xs & Y of Immune Response to Viral Vaccines Lancet 2010; 10:338-349. Sex Differences in Response to Both Childhood and Adult Virus Vaccines YFV Vaccination Induces TLR-Interferon Signaling F>M Genes expressed in women (pink), men (blue), or both (white) 2–10 days after YFV17D vaccination TIV/LAIV: influenza vaccines MMR: measles, mumps, and rubella. HAV: Hepatitis A; HBV: Hepatitis B. Klein SL et al. The Xs and Y of immune responses to viral vaccines. Lancet 2010; 10:338-49. 17DV, BERNA-YF, RKI-YF, ARILVAX, YFVAX, AP-YF, 17DD, 17D: yellow fever. RA27/3: rubella; Schwarz : measles. HPV4: Human papillomavirus #6,/11/16/18. HSV-2 gD: Herpes virus type 2. HDCV and PCEC: rabies. Dryvax: smallpox. Edmonston-Zagreb: measles. Adverse Events & Anthrax Vaccine Symptoms not Relieved by Meds, Cannot Perform J Occup Environ Med 2003;45:222-33. • • • • • • • • • • • Muscle aches 416 Male – 185 Female 2.0% - 3.0% Fatigue 1.2% - 2% Headache 1.4% - 0.5% Joint ache 1.4% - 1.4% Loss of appetite 0.2% - 0.5% Nausea and vomiting 0.6% - 1.4% Fever 1.1% - 4.5% Chills 0.3% - 0.8% Diarrhea 0.3% - 0.8% Shortness of breath 0.3% - 0.2% Itching over entire body 0.5% - 0.6% TAMC Anthrax Vaccine Study 601 HCW’s: Severity “4” From the desk of RJM Engler, MD: 2013 (A). Ingenuity pathways analysis of innate immunity genes identified as being important predictors of adaptive responses to YFV 17D and the changes in expression specific to study participants who were women (B) and men (C). In the pathway analysis, node colours indicate changes of gene expression (purple=2–18fold upregulation; green= – downregulation; white=no significant change from baseline) between day 0 and 7 in women (n=11) and men (n=5). Klein SL et al. The Xs and Y of immune responses to viral vaccines. Lancet 2010; 10:338-49. Gender Difference in Immune Responses and Side Effect Severity Gender More important determinant of immune response than dose or age groups Arch Intern Med 2004; 164:266-2272 Geometric Mean Titers: 18-49 Years Reduced dose influenza vaccine in impacting side effects for women Local reactions Impacting systemic side effects Geometric Mean Titers: 50-64 Years Clinical Relevance Individuals with Complaints of More Severe, Impacting FLU-like Symptoms after Influenza Vaccine: Should dose be lowered? 2 Non-IgE Mediated Vaccine Reactions 2012 Updates An Expanding Platform of Challenges in Immunization • Updates and Highlights – TdaP/Td: New vaccine information sheet 24Jan12 • Tdap: Fever over 102 F (about 1 in 100 adolescents and 1 in 250 adults), Headache (1 in 300), nausea, vomiting, diarrhea, stomach ache (up to 3 in 100 adolescents and 1 in 100 adults) • Dose after 20 weeks pregnancy, elderly in contact with infants • NEW: with each pregnancy even if less than 3 years apart! • Risk of repeated TdaP every few years with new guidelines – Influenza vaccine ingredients: Oculo-respiratory Syndrome 2000 Canadian Case Definition of ORS • At least one of the following symptoms: bilateral conjunctivitis, respiratory problem (chest tightness, difficulty breathing, wheezing), and oropharyngeal edema, or any combination of these conditions within 24 hours of receiving the vaccine. Exclusions: URI prior to or after immunization. http://www.collectionscanada.gc.ca/webarchives/20071222064231/http://www.phac-aspc.gc.ca/publicat/ccdrrmtc/01vol27/dr2710ea.html • Attack Rate of 3.4% (95% CI 2.4-4.4%) • Evolved case definition to 2 symptoms for specificity Age-group distribution (years) of ORS cases for 20002001 to 2003-2004 influenza seasons (n=3264) • FluMist: egg, MSG, gentamicin, gelatin, arginine • Fluzone: egg, formaldehyde, gelatin, thimerosal (multi-dose), latex(single) – Afluria: egg, neomycin, polymyxin B, thimerosal (multi-dose vials) 2 Deaths/males: age 72 (day 54) and age 66 (day 8) – insufficient evidence to determine causality? Females affected more than males (2x) • Influenza vaccines • Oculorespiratory syndrome: not anaphylaxis Canadian Influenza Vaccines Oculorespiratory Syndrome Symptoms in Primary & Revaccinated Smallpox Vaccine Recipients Randomized crossover DBPC trial (vaccine-placebo 7 days apart): Recurrence Rates? • 2 FLU Vaccines used • Risk difference in ORS symptoms 24 hours after receiving vaccine vs placebo • Recurrence 34% (21-47%) Fluviral S/F 34% (21-47%) Deoxycholate • Virus-splitting acid • Used in vaccines linked to febrile seizures in Australia and Canadian ORS • Manufacturing changes linked with reductions in ORS (A) Percentage With Indicated Vaxigrip 15% (2-28%) Rate 2x higher in patients with ORS in 2000/revaccinated vs not revaccinated vs ORS in 2001 not in 2000 Symptom And (B) Mean Number of Clinic Visits Etiology Identified? Vaccine Production with Deoxycholate – Linked to Febrile Seizures & ORS: AEFI Prevented Through Vaccine Modifications! At Which Symptom Was Reported Cytokine Response to Smallpox Vaccine • JID 2010:201 (15 April) • 1183-1191 New Onset Systemic Symptoms Following Smallpox (SPX) Immunization Host Cytokine Patterns Associated with Adverse Events after Smallpox Immunization Pattern of 4 cytokines (108 cytokines and chemokines measured pre/post 1st SPX) • Discriminated between patients with and without Adverse Events (fever, adenopathy, rash): Many Unmet Needs Personalized Medicine Issues within the Immunization Clinical Mission Targeting Safety, Efficacy & Acceptability Evidence Based Practice Improvements & Enhance Adverse Events Reporting ICAM-1-CD54 G-CSF Eotaxin TIMP-2 Kinetics of Serum Cytokines after Primary or Repeat Vaccination with the Smallpox Vaccine J Infect Dis. 2010; 201:1183-1191 IFN- , TNF- , IP-10, MIG, IL-6, etc. TIMP-2: Natural inhibitors of the matrix metalloproteinases - a group of peptidases involved in degradation of the extracellular matrix and with ability to directly suppress the proliferation of endothelial cells and of quiescent tissues in response to angiogenic factors. McKinney et al. Cytokine Expression Patterns Associated with Systemic AEs following Smallpox Immunization J Infect Dis.2006;194:444–53 From the desk of RJM Engler, MD: 2013 3 Non-IgE Mediated Vaccine Reactions 2012 Updates Myocarditis After Smallpox Vaccine Data Source N= Associated with Eosinophilic Hypersensitivity Myocarditis # Cases Percent % Cases: 1 in Historical Data1 New York - 1947 ~6,000,000 1 0.00002% ~50,000 Finland 1877-1879 60,000 10 0.02% ~5,000 CDC-Dryvax ®-2004 (Epi) 40,449 21 0.05% ~2,000 DoD-Dryvax 2004 ®- (Epi) ~1,200,000 140 0.01% ~10,000 Helle (Finland) 1974 234 8 3.4% ~30 Ahlborg (Sweden) 1963 286 3 1.0% ~100 Acambis FDA Data2003-4 All Studies Prospective Studies1 15 punctures Acambis-Dryvax®-All1 868 3 0.35% ~289 Acambis-ACAM2000®-All1 2983 7 0.23% ~426 1 Data Source: FDA-CBER Meeting Website 2007 May 17 on website at www.fda.gov/ohrms/dockets/AC/07/briefing/2007-4292B2-02.pdf Initial Evidence of Increased Risk for Febrile Seizures: MMRV vs MMR+V • Measles-mumps-rubella plus varicella: MMRV – MMRV combination vaccine to morbidity of shot #s • ACIP preferential recommendation MMRV over MMR+V • Post-licensure Safety Surveillance Studies – Vaccine Safety Data Link (VSD): confirmatory study • Demonstrated ~2 fold increased risk of febrile seizures (12-23 months) when MMRV in a single injection versus in 2 shots − MMWR Morb Mortal Wkly Rep. 2008 Mar 14;57(10):258-60. Update: recommendations from the Advisory Committee on Immunization Practices (ACIP) with update in 2009 – ACIP removes previous preference recommendation • Provider must make benefit-risk information available to enable choice of MMR+V versus MMRV − Complex risk communication in a setting of limited time Neurologic Immune Inflammatory Reactions Recurrent Guillain-Barré Syndrome Following Vaccination • GBS: acute polyradiculopathy, probably autoimmune – Reported as a rare but serious vaccine adverse event – ACIP recommends no influenza vaccine to individuals with a prior history of GBS within 6 weeks of a prior FLU vaccine IF not at higher risk of severe complications from influenza illness • Northern California Kaiser Study Clin Infect Dis 2012;54(6):800–4 – 1995-2006: hospital discharge diagnoses, neurology reviewed GBS – 550 cases of GBS over 33 million person-years, 6 with recurrence • 989 vaccines given to 279 of these individuals with 405 TIV vaccine doses given to 107 individuals with prior Dx of GBS • 18 had GBS with 6 weeks following FLU vaccine – 2 revaccinated without recurrence – Limitations of study: selection bias so at greatest risk for recurrence were not revaccinated? http://cid.oxfordjournals.org/content/54/6/800 From the desk of RJM Engler, MD: 2013 Antibiotic Anti-inflammatory Amphotericin B Ampicillin Chloramphenicol Penicillin Tetracycline Streptomycin Cephalosporin Sulfonamide Sulfadiazine Sulfisoxazole Anticonvulsant Phenindione Phenytoin Carbamazepine Antituberculous Isoniazid Para-aminosalicylic acid Indomethacin Oxyphenbutazone Phenylbutazone Diuretic Acetazolamide Chlorthalidone Hydrochlorothiazide Spironolactone Other Amitriptyline Methyldopa Sulfonylurea Tetanus toxoid Dobutamine Digoxin Captopril and enalapril Others To Consider Vaccinia, vaccines? Other drugs? Parvovirus B19 Other viruses? Barton M, et al. Eosinophilic myocarditis temporally associated with conjugate meningococcal C and hepatitis B vaccines in children. Pediatr Infect Dis J. 2008; 27:831-5. Can J Cardiol. 2006 December; 22(14): 1233–1237. Inactivated Trivalent Influenza Vaccine and Pneumococcal Vaccine (PCV13) • Febrile Seizures – Occur in 2-5% of all children: generally benign outcome – INCREASED RATE in children, especially 12-23 months, compared with those who received vaccines separately – ACTUAL RISK: 1 additional seizure in every 2225 children vaccinated – WHAT IS RISK of delaying one vaccine at well –baby visits? • Why Vaccinate with FLU Vaccine? MMWR Sep 16, 2011 – 2010-11: 115 children in US died from influenza – 50% of deaths occurred in children < 5 years of age • 17/74 (23%) had been vaccinated with TIV • Why Vaccinate with Pneumococcal Vaccine? – Pneumococcal disease: 1 million deaths annually worldwide (<5 yrs) – 13% of all infections in children, major cause of pneumonia – Rates of disease reduced in all ages with vaccine: 20% pneumonia Autoimmune Responses Influenza Vaccine? (Lupus. 2012;21(2):175-83.) • Autoimmune Inflammatory Rheumatic Disease (AIRD) – Prospective cohort study with 6 months follow-up: 218 patients AIRD • 50 vaccinated with seasonal FLU, 6 with H1N1, 104 with both • 58 non-vaccinated controls – Healthy controls: 41 subjects (9 seasonal FLU, 3 H1N1, 18 both) • Outcome Measures: Autoantibodies – ANA, ENA, aCL IgG/IgM, anti-beta2-glycoprotein • Antinuclear antibody (ANA), anti-extractable nuclear antigen (anti-ENA), anticardiolipin (aCL) IgG/IgM antibodies, anti-beta 2-glycoprotein I (anti-β2GPI)] – Baseline, 1 (AIRD only) and 6 month post vaccine • Results – Transient changes in autoantibody production in AIRD & controls – Small subset: tendency toward anti-ENA development (ANA+ pts) – H1N1 – aCL induction in some 4 Non-IgE Mediated Vaccine Reactions 2012 Updates Adverse Events Following 12 & 18 Months Vaccinations • Population-based, self-controlled case series – 271,495 12-month vaccinations – 184,312 18-month vaccinations • Relative incidence of ER visits or hospital admissions – Consecutive one day intervals following vaccination – Compared to control period 20-28 days later – Post-hoc analysis: reasons for ER visits, average acuity score for 12month vaccines. NOTE: No increase in hospitalizations seen • Results – 4-12 days post 12 months vaccines, RR incidence: 1.33 (1.29-1.38) • 1 excess event during risk interval every 168 children vaccinated – 10-12 days post 18-month vaccines: RRI 1.25 (1.17-1.33) • 1 excess event for every 730 children vaccinated • Future Studies: Risk Factors and/or Prevention? PLoS One. 2011;6(12):e27897. @ www.ncbi.nlm.nih.gov/pubmed/22174753 Defining Vaccine Injury: Evidence of Causality? • 2008 Table of Reportable Events Following Vaccination – Based on independent review of existing evidence • http://vaers.hhs.gov/resources/VAERS_Table_of_Reportable_Eve nts_Following_Vaccination.pdf – Defines events that are compensable without dispute under the Vaccine Injury Compensation Program (VICP) • 2011 Institute of Medicine (IOM) Report – 12000 peer-reviewed articles considered; 158 vaccine AE pairs • Goal: Updated scientific basis for review and adjudication of claims of vaccine injury by the VICP – Lesson learned: “some issues simply cannot be resolved with currently available epidemiologic data, excellent as some of the collections and studies are.” www.iom.edu/Reports/2011/AdverseEffects-of-Vaccines-Evidence-and-Causality.aspx – Outcomes: 134 “insufficient evidence to accept or refute a causal relationship”; 24 consensus for or against causal association 2011 Institute of Medicine IOM Report Summary - 1 Adverse Effects of Vaccines: Evidence & Causality Evidence Supports Causal Relationship • Consensus Report: August 25, 2011 – www.iom.edu/Reports/2011/Adverse-Effects-of-Vaccines-Evidence-and-Causality.aspx - New Categories of Causation Agreed on! • Reviewed 8 of 12 covered vaccines: varicella zoster, influenza (not H1N1), hepatitis B, HPV, MMR, Hepatitis A, meningococcal, tetanus-containing vaccines (aP) • Evidence convincingly supports a causal relationship – Example: paralytic polio and oral polio vaccine • Evidence favors acceptance of a causal relationship – Evidence is strong and generally suggestive, although not firm enough to be described as convincing or established. • Evidence is inadequate to accept or reject a causal relationship – The evidence is not reasonably convincing either in support of or against causality; evidence that is sparse, conflicting, of weak quality, or merely suggestive— whether toward or away from causality —falls into this category. Where there is no evidence meeting the standards described above, the committee also uses this causal conclusion. • Evidence favors rejection of a causal relationship – The evidence is strong and generally convincing, and suggests there is no causal relationship. Evidence Convincingly Supports a Causal Relationship • Varicella Vaccine: – Disseminated varicella infection rash after vaccination – Disseminated varicella infection with subsequent infection resulting in pneumonia, meningitis, or hepatitis in individuals with demonstrated immunodeficiencies – Vaccine strain viral reactivation (appearance of chickenpox rash months to years after vaccination – Vaccine strain viral reactivation with subsequent infection resulting in meningitis or encephalitis (inflammation of the brain) • MMR Vaccine – Linked to disease called measles inclusion body encephalitis • In very rare cases, can affect people whose immune systems are compromised and usually occurs within a year of acute infection or vaccination IOM Report Summary – 2 IOM Report Summary – 1 Evidence Supports Causal Relationship Evidence Favors Causal Relationship Evidence Convincingly Supports a Causal Relationship • MMR Vaccine – Linked to disease called measles inclusion body encephalitis • In very rare cases, can affect people whose immune systems are compromised and usually occurs within a year of acute infection or vaccination – Linked to febrile seizures • Generally benign and hold no long term consequences • NOTE: enhanced risk when MMRV used versus MMR & V • 6 Vaccines Linked to Anaphylaxis – MMR, varicella zoster, influenza, hepatitis B, meningococcal, tetanus-containing vaccines • Injection of Vaccine, Independent of Antigen Involved – Syncope (risk of fall complications described) – Deltoid bursitis (frozen shoulder): shoulder pain, loss of motion From the desk of RJM Engler, MD: 2013 Evidence Favors Acceptance of a Causal Relationship (Evidence favors acceptance of 4 vaccine AEFI: strong and generally suggestive but not firm enough to be convincing) • HPV vaccine and anaphylaxis • MMR vaccine and Transient Arthralgia (temporary joint pain) in female adults • MMR vaccine and transient arthralgia in children • Certain trivalent influenza vaccines used in Canada in some recent years and mild/temporary oculorespiratory syndrome – Conjunctivitis, facial swelling, upper respiratory symptoms including cough and wheezing 5 Non-IgE Mediated Vaccine Reactions 2012 Updates Human Statue of Liberty 1918 18,000 men preparing for war at Camp Dodge, Iowa IOM Report Summary – 1 Evidence Favors Rejection of a Causal Relationship Base to Shoulder: 150 feet Right Arm: 340 feet Widest part of arm holding torch: 12 1/2 feet Right thumb: 35 feet Thickest part of body: 29 feet Left hand length: 30 feet Face: 60 feet - Nose: 21 feet Longest spike of head piece: 70 feet Torch and flame combined: 980 feet Number of men in: Flame of torch: 12,000 Torch: 2,800 Right arm: 1,200 Body, head & balance of figure only: 2,000 Evidence Favors Rejection of a Causal Relationship • MMR vaccine and – Autism – Type 1 diabetes • DTaP vaccine and – Type 1 diabetes • Inactivated influenza vaccine – Bell’s palsy (weakness of facial nerve) • Inactivated influenza vaccine – Exacerbation of asthma or reactive airway disease episodes in children and adults TEAMWORK & COMMUNICATION www.VHCinfo.org/www.vaccines.mil Clinical Consultations 24/7: 1-866-210-6469 Questions? Countermeasure Injury Compensation Program (CICP) • Health Resources and Services Administration – HRSA houses CICP: created by PERP Act • PERP: Public Readiness & Emergency Preparedness Act • PERP Act (http://www.hrsa.gov/countermeasurescomp/) Vaccine Healthcare Centers Network Supporting Quality Immunization Healthcare Building Trust Through Improved Understanding of Biodiversity in Vaccine Responses CICP Coverage Populations and Countermeasures • Coverage: Secretarial declaration specifies . . . – Categories of threats or conditions for which countermeasures are recommended. – The time period of liability protections are in effect – The population of individuals protected – The geographic areas for which the protections are in effect. • Countermeasures currently covered include vaccines, antibiotics or devices used to protect against the following: – Influenza (pandemic, not seasonal) • Seasonal influenza vaccines covered by VICP – Anthrax Filing deadline: Within 1 year of vaccination – Botulism If a possibility, FILE as placeholder! – Smallpox Contact or refer patients to the – Acute Radiation Vaccine Healthcare Centers Network From the desk of RJM Engler, MD: 2013 – Provides compensation to individuals for serious physical injuries or deaths from pandemic, epidemic, or security countermeasures • Identified in declarations issued by Secretary of HHS • Pursuant to section 319F-3(b) of the Public Health Service Act − PHS Act 42 (U.S.C.247d-6d) – Provides broad liability protections to cover • Manufacture and testing • Development and distribution • Use of designated covered countermeasures • Vaccine Injury Compensation Program (VICP): distinct Immunization Tool Kit (7th Edition) The VHCN offers four ways for military healthcare professionals to view and receive the comprehensive immunization information included in the Tool Kit: 1. Order a Printed Tool Kit • The Tool Kit is a pocket-sized immunization reference book • Printed, bound for flexibility in what you carry, laminated (can spill coffee on it): ideal for use in the field. 2. Download the Tool Kit (pdf format) • The Tool Kit is a pocket-sized immunization reference book 3. View Tool Kit as a book online 4. Access Immunization Took Kit Online • Access for links to online information & resources 6 Non-IgE Mediated Vaccine Reactions 2012 Updates Viewing the Tool Kit on an iPhone iPAD, Other Apps Coming Soon 1. On the iPhone, go to the Apple Store and search for PDF Reader Lite. 2. Install the PDF Reader application on your iPhone 3. Go to www.vhcinfo.org using Safari on your iPhone and click on Tool Kit on the main menu. 4. Click on “Download Tool Kit (pdf). Item # 2 5. When the main page of the Tool Kit appears, touch the screen on the iPhone once. In the top corner you will see “Open in Adobe Reader”, tap this and the Tool Kit will now be viewable in Adobe Reader. 6. Any time you open the Adobe Reader application on your iPhone, you will be able to access the Tool Kit. Growing Complexity with Challenges to Competency Sustainment in the Force Managing Vaccines as Prescription Drugs Supporting Balanced Benefit-Risk Assessments for Medical Exemptions Users will not need Wi-Fi or internet connection to view the Tool Kit once it is saved to Adobe Reader. Use the tools available with the Adobe Reader application to search or bookmark pages in the Tool Kit for quick and easy access. COMING SOON: Apps for iPod, android, etc. www.vhcinfo.org/education.asp?page=toolkit&title=Toolkit UNCLASSIFIED 38 of x Alternate Vaccination Schedule Outcomes of Immunizations in Infancy & Childhood • Pediatrics 2011 (online 3 Oct 2011): Hit the News JAMA. 2007;298(18):2155-2163 – Dempsey AF et al. Pediatrics 2011;128:848-856. Arch Pediatr Adolesc Med. 2005;159(12):1136-1144. Vaccination with 7 of the 12 routinely recommended childhood vaccines prevents an estimated 33 000 deaths and 14 million cases of disease in every birth cohort, saves $10 billion in direct costs in each birth cohort, and saves society an additional $33 billion in costs that include disability and lost productivity. UNCLASSIFIED Preferences Among Parents of Young Children • http://www.foxnews.com/health/2011/11/29/many-parents-request-delays-in-vaccineschedule/ • Results of Survey (748 parents responded, 61%) – 13% of parents reported alternative vaccine schedules – 53% refused certain vaccines and/or delayed some vaccines until the child was older (55%) – 17% reported refusing all vaccines: factors associated • Not having a regular health care provider • Nonblack race – Large proportion of alternative schedule vaccinators followed initial recommendations – 28% thought delaying vaccine was safer & 22% disagreed with experts 39 of x International Focus Immunization Safety Importance • Brighton Collaboration Adverse Reaction Rates to Smallpox Vaccine (per Million) – http://www.who.int/vaccines-documents/DocsPDF05/815.pdf Estimates reviewed: Military Medicine 2000; 165:4:287 • Encephalitis: 0.2-8 with 0 in healthy revaccinees – Lower rates related to age/re-vaccinees • Vaccinia necrosum: 1-4 per million • Eczema vaccinatum: 2-15 with highest in Israel Defense Force (IDF) experience (91-96) • Generalized vaccinia: 2-30 (highest in Puerto Rico experience 1967-68) • E multiforme: 3-24 (Puerto Rico ) • Inadvertent inoculation: 2-13 • Secondary infection: 6 (in IDF experience) US Total 46 per million From the desk of RJM Engler, MD: 2013 7 – www.brightoncollaboration.org/internet/en/index.html – Adverse Events Following Immunization (AEFI) Case Definitions • http://brightoncollaboration.org/internet/en/index/definition___guid elines.-MainContentPar-0005DownloadFile.tmp/Case_Definition_Format_Template.pdf • World Health Organization (WHO) – http://www.who.int/immunization_safety/en/ – Immunization Safety Priority Project – Vaccine safety and quality • WHO Causality Assessment Clinical Guidelines Non-IgE Mediated Vaccine Reactions 2012 Updates 2009-2010 Influenza Vaccine Safety Network • • • • • • • • • Vaccine Adverse Event Reporting System (VAERS) Real Time Immunization Monitoring Systems (RTIMS) Vaccine Safety Datalink (VSD), Department of Defense (DoD) Defense Medical Surveillance System (DMSS) Post-Licensure Rapid Immunization Safety Monitoring (PRISM), Indian Health Service (IHS), Department of Veteran Affairs (VA), Centers for Medicaid and Medicare Services (CMS), and CDC’s EIP. Immunization 2012 New Framework for Evidence Based Guidelines • Advisory Committee on Immunization Practices (ACIP) – Expert advice/guidance to Director CDC and Secretary, HHS – Basis of Evidence Based Recommendations: • Grading of Recommendations, Assessment, Development, Evaluation (GRADE) − Balance of benefits and harms; Type of evidence − Values and preferences of people affected − Health economic analyses • Category A: for all persons in an age- or risk-factor-based group • Category B: “for individual clinical decision making and do not apply to all members of an age- or risk-factor-based group, but in the context of a clinician-patient interaction, where vaccination may be found appropriate for a person” • New: Balance Considering Not Just Quality of Evidence Vaccine. 2011 Nov 15;29(49):9171-6. Epub 2011 Aug 11. MMWR Report 2010 Jun H1N1 Vaccine Safety Surveillance: Limitations 1. Misclassification of some cases, particularly in young – Impact: Underestimation of GBS cases 2. Inaccurate reporting of date of vaccination – Impact: Overestimation or underestimation of cases in risk window 3. Rate ratio relies on vaccination coverage estimates – – BFRSS and NHFS data, not actual dose delivery – 2-3% diff Impact: Underestimation of the rate ratio 4. Incomplete case ascertainment or reporting bias – Active case finding surveillance 5. None of vaccine monitoring systems currently in use, including EIP, can fully account for other confounding risk factors for GBS – Cannot prove causal relationship between vaccination & GBS Vaccine Recommendations GRADE Evidence Approach • Evidence Tables To Summarize – The benefits and harms – The strengths and limitations of the body of evidence. – ACIP unanimous vote to adopt GRADE approach: Oct 2010 • Quality of evidence for benefits & harms only 1 factor in developing recommendations: balance with values, health economics • New Evidence Framework Goals – Enhance the ACIP's decision-making process by making it • More transparent, consistent and systematic. – Response to challenges and criticisms – A move towards personalized/subpopulation-focused medicine? Online Review of GRADE: http://www.cdc.gov/vaccines/recs/acip/GRADE/about.htm Ahmed F, et al.; ACIP Evidence Based Recommendations Work Group (EBRWG). Methods for developing evidence-based recommendations by the Advisory Committee on Immunization Practices (ACIP) of the U.S. Centers for Disease Control and Prevention (CDC). Vaccine. 2011 Nov 15;29(49):9171-6. Epub 2011 Aug 11. New Framework for Development of ACIP Guidelines for Vaccines Vaccine. 2011 Nov 15;29(49):9171-6. Advisory Committee on Immunization Practices From Online Presentation At www.cdc.gov/vaccine s/recs/acip/GRADE/d ownloads/newframeworkrecs%20.pdf Email: fahmed@cdc.gov Category A: for all persons in an age- or risk-factor-based group Category B: “for individual clinical decision making and do not apply to all members of an age- or risk-factor-based group, but in the context of a clinician-patient interaction, where vaccination may be found appropriate for a person” From the desk of RJM Engler, MD: 2013 8