the latest and greatest in the world of … 2014/pdf presentations/1630... · the latest and...
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THE LATEST AND GREATEST IN THE WORLD OF VACCINES
Nikki Turner
University of Auckland
June 2013
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Only clean water and antibiotics
have had an impact on childhood
death and disease that is equal to
that of vaccines World Health Organization
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Analysis of US 2009 birth cohort - effect of the routine childhood immunisation programme
Prevent 421,000 early deaths
Prevent 20 million cases of disease
Net savings – $ US 13.5 billion in direct costs
– $ US 68.8 billion in indirect costs
3 Zhou F et al Pediatrics 133:4. March 2014
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• Schedule changes 2014
• Current challenges with VPDs
• Influenza
• Pregnancy vaccination
• Private market vaccines
• Future of the national schedule
• Immunisation coverage
• Communication issues
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Routine schedule changes 1 July 2014
2014 Schedule Change Vaccine For whom
Introduction of rotavirus
vaccine
Rotateq® All children at 6wk, 3mth and
5mth
Change from PCV10 to
PCV13
Prevenar13® Replaces PCV10
Use of DTaP-IPV or Tdap in
catch up schedules
Boostrix®
Infanrix-IPV®
Incompletely immunised
children aged up to 17 years
Post immunosuppression.
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Rotavirus
• Death rare
• 1 in 43 children hospitalised by 5 yrs in NZ
• For each hospitalisation 8 children seen in primary care
• > 90% children have RV by 3 yrs
– no strong ethnic or se gradient, a universal bug!
Lepage P. Pediatr Infect Dis J 2006;25:S5−S6.
Grimwood K, Lambert SB. Hum Vaccine 2009;5:57−69
Milne RJ, Grimwood K. Value Health 2009;12:888−898
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Rotavirus vaccine
Available from 1st July 2014
• RotaTeq® vaccine (MSD)
• Live Pentavalent vaccine
• 3 oral doses
– 1st dose before 15 wks of age
– 3rd dose no later than 8 months of age
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Viral shedding
• Occurs less with RV5 than RV1
• Stress good hand washing after nappy changing and careful disposal of nappies
Intussusception
• Vaccine-attributable risk estimate 5.6 additional cases/100 000 vaccinated infants – Based on increased incidence in 1-21 days post dose 1 and 1-
7 days post dose two
• Estimated 14 extra IS cases and >6500 fewer gastroenteritis hospitalisations annually in Australia.
Carlin JB et al. Clin Infect Dis. 2013; 57:1427-34.
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Vaccine Percentage of cases prevented
Risk ratio (95% confidence interval)
Number of participants (number of trials)
Quality of evidence
Severe rotavirus diarrhoea: infants aged under one year
RV1 86 0.14 (0.07–0.26)
40,631 (6)
high
RV5 87 0.13 (0.04–0.45)
2344 (3)
moderate
Severe rotavirus diarrhoea: children aged under two years
RV1 85 0.15 (0.12–0.2)
32,854 (8)
high
RV5 82 0.18 (0.07–0.5)
3190 (3)
moderate
Severe all-cause diarrhoea: infants aged under one year
RV1 40 0.60 (0.5–0.72)
17,867 (1)
moderate
RV5 72 0.28 (0.16–0.48)
1029 (1)
low
Severe all-cause diarrhoea: children aged under two years
RV1 37 0.63 (0.56–0.71)
39,091 (2)
moderate
RV5 96 0.04 (0.00–0.70)
5916 (1)
low
Source: Adapted from: Soares-Weiser K, MacLehose H, Bergman H, Ben-Aharon I, et al. 2012. Vaccines for preventing rotavirus diarrhoea: Vaccines in use. Cochrane Database of Systematic Reviews (11). 10.1002/14651858.CD008521.pub3 (accessed 12 August 2013).
Table from Cochrane review: percentage of severe rotavirus and all cause diarrhoea cases
prevented in children by RV1 and RV5, compared to placebo in low mortality rate countries
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Rotavirus vaccine introduction in Australia
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Special Risk Groups Schedule Change Vaccine For whom
Targeted varicella vaccine
for high risk groups
Varilrix® Targeted programme for high risk
groups and close contacts
Meningococcal conjugate
vaccines replaces
polysaccharide
meningococcal vaccine
Menactra® for 2 years
of age and older.
Neisvac-C® for under 2
years of age.
Pre- and post-splenectomy, functional
asplenia
Post solid organ or bone marrow
transplant
Post immunosuppression
Close contacts of meningococcal cases
Hepatitis A vaccine Havrix® and Havrix
Junior®
Transplant patients
Children with chronic liver disease
Close contacts of hepatitis A cases
On recommendation of a local MOH
Introduction of a higher
dose Hepatitis B vaccine
HBvaxPRO® 40mcg Dialysis patients
Liver or kidney transplant patients
Change to eligibility criteria
for HPV vaccine
Gardasil® Patients aged under 25 years with HIV
Transplant patients
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The high risk groups for funding
categories are likely to change in future,
check the latest Pharmaceutical Schedule
for clarification.
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Varicella vaccine Varilrix (2 doses) will be funded under set criteria:
For non-immune patients:
with chronic liver disease who may in future be candidates for transplantation; or
with deteriorating renal function before transplantation; or
prior to solid organ transplant; or
prior to any elective immunosuppression.
For patients 2 years after bone marrow transplantation
For patients at least 6 months after completion of chemotherapy
For HIV positive non immune to varicella.
For household contacts of paediatric patients who are immunocompromised
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Current challenges
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• High degree of suspicion:
– Generalised maculopapular rash
– Fever (>380C)
– Cough, coryza, conjunctivitis or Koplik’s spots
– Suspicion of sporadic case want diagnosis:
• Blood for serology
• NP swab
• Vaccination +++
– anyone born since 1969 needs 2 recorded MMR
– MMR < 1 year not counted
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Pertussis: New Zealand notifications and hospitalisations
https://surv.esr.cri.nz/PDF_surveillance/PertussisRpt/2013/Pertussisreport
Oct-Dec2013.pdf
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Pertussis control….tricky
• Unable to eradicate from whole community
– aP vaccines have limited duration of action, minimal/no herd immunity
• Most severe in younger children
– Main target of immunisation strategies
• KEY: High coverage and timeliness of delivery
• Other strategies – Immunising pregnant women
– Immunising older children
– cocoon strategies
– Immunising HCPs/ECC occupations
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FLU
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Recent TIV vaccine efficacy and effectiveness studies conducted in adults under 65 years of age. Adapted from Plotkin 6th edition 2012 and updated.
Study Population age Study design Study years Outcomes and VE
Jefferson 2010 [14] 16-65 Meta-analysis NA 30% (17%-41%) VE
against ILI
73% (CI 54%-84%) VE
against influenza
symptoms
Osterholm 2012 [74] 18-65 years Systematic review
and meta-analysis
N/A 59% (CI 51%-67%) VE
against influenza
Monto 2009 [75] 18-49 RPCT 2007-2008 68% VE against LCI
Beran 2009 [76] 18-64 RPCT 2006-2007 62% VE against LCI
67% VE against vaccine
matched strains
Jackson 2010 [77] 18-49 RPCT 2005-6 2006-7 49% VE against CCI
63% VE against C or SCI
Barrett 2011 [78] 18-49 RPCT 2008-2009 78% VE against matched,
CCI
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Study Population age Study design Study years Outcomes and VE
Jefferson 2012 [15] Under two
years
Systematic review N/A Insufficient data to support
VE
Cochran 2010 [69] 6-23 months Retrospective cohort 2003-2006 76% VE against LCI 2005-6
No effectiveness in 2003-4
or 2004-5
Heinonen 2010 [70] 9 months to 3
years
Prospective cohort 2007-2008 66% VE against ILI
Kelly 2011 [71] 6-59 months Case-control 2008 58% VE against medical
visits;
Vesikari 2011 [72] 6-71 months RPCT 2007-8 and
2008-9 43% (CI 15-61%) VE against
PCR-confirmed influenza
Jefferson 2012 [15]
[73]
Under 16 years Systematic review
and meta-analysis
N/A 59% (41% - 71%) efficacy
against LCI
36% (24% - 46%)
effectiveness against ILI
Recent TIV vaccine efficacy and effectiveness
studies conducted in infants and children. Adapted from Plotkin 6th edition 2012 and updated.
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SARI and influenza hospitalisations by age groups
NZPHSR 2013;11(2):5-6
<1 1-4 5-19 20-34 35-49 50-64 65-79 80+
SARI 4,636 935 94 128 137 320 860 1,445
Influenza 411.7 107.8 18.9 28.7 29.3 62.3 130.5 222.7
0
50
100
150
200
250
300
350
400
450
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
Infl
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SAR
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Eligible funded ....includes
• “children under the age of 5 years who have been hospitalised for a respiratory illness, or have a history of significant respiratory illness”
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Vaccines
• TIV (trivalent inactivated vaccines) – The only current NZ vaccines – Quadrivalents (QIV) on the way
• Adjuvanted – Expected to have stronger immune response – Was used effectively in some pandemic vaccines – Likely better immune response in elderly ,young children – Safety issues – local reactions, ?narcolepsy
• LAIV (Live Attenuated Intranasal) – Broader immune response – Likely better for children – ?safety issues in children <2 yrs – Likely better for herd immunity – To be introduced to UK all children > 2 , 2014
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Strategies
• Targeted Individual protection
• Pregnancy – individual protection and fetal/infant protection
• Cocoon protection (not funded)
– Infants
– Elderly
– High risk patients
• Herd immunity
– Universal childhood vaccination
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Pregnancy and Vaccination
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Flu vaccine
- Start of flu season
• Reduces maternal morbidity/mortality
• Reduces fetal mortality – Reduces fever
• Reduces flu in newborn – Ab protective for around
8 weeks
– 91% effective in reducing flu in infants
Pertussis-containing vaccine
- 28 to 38 weeks gestation
• Reduces maternal morbidity
• Reduces risk of transfer to newborn
• Some passive protection to newborn
– Higher Ab transfer if later in pregnancy
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Effectiveness of flu vaccine given during pregnancy in preventing hospitalisation for flu in infants 91% effective
Benowitz I, Esposito DB, Gracey KD, Shapiro ED, Vazquez M. Influenza vaccine given to pregnant women
reduces hospitalization due to influenza in their infants. Clinical Infectious Diseases 2010 Dec
15;51(12):1355-61.
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Private Market Vaccines
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• Cory has been brought in for his 6 week immunisations. His Mum wants to give him all the full protection she can. Should she have the ‘better’ pneumococcal vaccine that she was told about in her antenatal group.
• Cory’s brother is 8 years old and the mum wants him to have the meningococcal protection because he missed the MeNZB vaccination programme
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• Cost can be high
• Consumers want to be given the choice
• We are not effectively or systematically offering private market vaccines in GP
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Groups with the highest rates of meningococcal disease in New Zealand
by age and ethnicity over 2008–20125
Meningococcal group B
disease (no vaccine available)
Meningococcal group C
disease (vaccines available)
By ethnicity
Infants under 1 year of
age
Children aged 1–4 years
Children aged 1–4 years
Adolescents aged 15–19
years
Maori
Pacific peoples
A, Y , W135 strains rare in NZ context: useful for travellers
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Meningococcal vaccines
Polysaccharides – quadrivalent A, C, Y, W-135
Mencevax® ACYW, Menomune® ACYW-135
• Ineffective in younger children
• Short duration of immunity
• Possible hyporesponsiveness with multiple use
• Cheap , traditional travel vaccines
Conjugates
C: Meningitec®, NeisVac-C™
Quadrivalent A, C, Y & W135: Menactra®
• Effective in younger children
• Herd immunity effects
– B vaccine.....not yet (NB unlikely to be any individual protection left now in NZ community from MeNZB vaccine) 34
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Varicella • 2 dose from 9m or ?one dose from a year of age (assume wild boosting)
• Adolescents/adults with no history of disease 2dose
Meningococcal • Conjugate C 2 (to infants) + 1 booster (>1 year)
• Conjugate C or quadrivalent at mid teenager
• Every 5 year if high risk/concerns
Pneumococcal • PCV13 followed by PPV23 for high risk respiratory COPD etc
Pertussis and influenza: pregnancy (funded)/cocoon
HPV • boys, particularly MSM
Shingles • Elderly ?>60 yrs…..or older
At risk occupations/travellers – hepatitis B, hepatitis A, flu
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Shingles - Zostavax
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• VE – Zoster reduction 51%
– Post herpetic neuralgia reduction 67%
• Contraindications – Anaphylaxis to any components, neomycin
– Immunodeficiency/ immunosuppressed
– Pregnancy
– Active untreated Tb
• Who to advise
– Elderly …..
Aims
– Keep independent living
– Reduce increased frailty with onset of zoster
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NZ Immunisation Schedule
? the future....
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Vaccines: What is next............
• Always the possibility of future flu pandemics
• Next vaccines recommended for the schedule
– Varicella
• To consider after that
– Meningococcal Vaccines
• Conjugates C and quadrivalent
• B (Bexsero licensed in Australia)
– Better flu vaccines: live attenuated (kids), adjuvanted(elderly)
– HPV for boys/men
– Shingles vaccines (elderly)
– Pertussis vaccines in older age groups…
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Immunsation coverage progress…..
A celebration of how fabulous General Practice can be!
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1995 Strategy
Priorities for Action Report
National Strategy Parliamentary Enquiry
National Health Targets
2012 targets
NIR
NHC report
PHC report
Turner N, unpublished; using combined data from national surveys and the NIR
Percentage fully immunised by two years of age
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Data sourced from NIR
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Why are we improving • Commitment at all levels – national target
• Feedback loops – DHBs and PHOs
• General Practice engagement and confidence – More focus , higher priority
– Less missed opportunities
• SYSTEMS – Early ENROLMENT! - and follow up
– Precalls/recalls/audits
– PMS/NIR
– Providers to OIS : effective interface
• Confident health sector spills over to confident public – Less anti-science in the media
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Areas to continue focus: Missed opportunities
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True contraindication
• Anaphylaxis to any component of the vaccine
• Acutely unwell: high fever, toxic etc
Immunocompromised with a live vaccine (MMR, Varicella)
Evolving neurological conditions with pertussis
Anaphylaxis to egg with flu vaccine
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False….
• MMR vaccine causes autism
• Egg allergy cannot vaccinate with MMR
• Availability of single vaccines eg tetanus
• 3 injections at 15 months is too hard
• Can’t vaccinate while breast feeding
X
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Communication challenges
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Coincidence vs. Causality
“Regardless of what the research tells us, I know what I saw.”
Dr. Kathy Pratt, April 25th, 2001, during a hearing by the Office of
Government Reform to investigate MMR and autism
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Anecdote trumps science any day hero, victim and villain
“He plunged the needle into my son and I watched his soul leave
his body”
Jenny McCarthy
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Assessing Risk
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Thank you
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0800 IMMUNE
(466863)
www.immune.org.nz