“An outbreak of measles occurred in a municipal school system which had reported 98% of students immunized against measles. A case-control study was conducted to determine reasons for vaccine failure. Vaccine failure was associated with immunizations that could not be documented in the provider’s records.”
Brazil’s Sao Paulo Pushes For Mandatory COVID Vaccinations
In September, Brazil's wealthiest and most populous state Sao Paulo went into contract with Chinese vaccine developer Sinovac Biotech, with the expectations to receive 46 million doses of CoronaVac. CoronaVac has been in Phase 3 testing in the South American country...
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