Herd Immunity and Outbreaks

About Herd Immunity – The Political Blindspot

The Hill – If Only Half of America is Properly Vacinated Where Are All The Epidemics?

The Concept of Herd Immunity (blog)

The Herd Immunity Myth and How It Pits Parent Against Parent – The Healthy Home Economist


Herd Immunity and
Outbreaks in highly vaccinated populations

Pertussis Outbreak, Washington, 2012
Overall, 758 of 1,000 (75.8%) patients aged 3 months–10 years were up-to-date with the childhood diphtheria and tetanus toxoids and acellular pertussis (DTaP) doses. Receipt of Tdap was documented in 97 of 225 (43.1%) patients aged 11–12 years and in 466 of 604 (77.2%) patients aged 13–19 years. Estimated DTaP coverage in Washington among children aged 19–35 months was 93.2% for ≥3 doses and 81.9% for ≥4 doses in 2010; Tdap coverage in adolescents aged 13–17 years was estimated at 70.6% (3).
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6128a1.htm

Pertussis (Whooping Cough) in fully vaccinated – Study
http://wwwnc.cdc.gov/eid/article/6/5/00-0512_article

99% Fully Vaccinated during Outbreak
Harvard UniversityHerd Immunity Titers

69 Cases of Mumps in Australia
All Vaccinated

Whooping Cough
85% were vaccinated

Whooping Cough
90% of those infected in Vermont were fully vaccinated

70 Cases of Whooping Cough In Reno County, All Vaccinated
(archived copy, original article edited out the vaccination status)

Disneyland: Failing Measles Vaccine to Blame
Global Research

5 Vaccinated Kids with Chickenpox, Sending unvaccinated kids home.
Charlotte Observer

Disneyland Outbreak STUDY (Patient Zero not identified)
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6406a5.htm

Measles Outbreaks in China, 99% Compliance
GreenMedInfo

Outbreak in Highly Vaccinated Population: USS Ardent, 2014
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6342a3.htm

Pertussis high amongst fully immunized children in Lithuania
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1177947/

Pertussis outbreak in US elementary school with high vaccination coverage.
http://www.ncbi.nlm.nih.gov/pubmed/11740314

Pertussis in fully vaccinated population in North America
http://cid.oxfordjournals.org/content/early/2012/03/13/cid.cis287

herd immunity travel