Selected article for: "herd immunity and virus herd immunity"

Author: Martha K Berg; Qinggang Yu; Cristina E Salvador; Irene Melani; Shinobu Kitayama
Title: Mandated Bacillus Calmette-Guérin (BCG) vaccination predicts flattened curves for the spread of COVID-19
  • Document date: 2020_4_7
  • ID: 44zlnswd_19
    Snippet: Notably, the growth curves were as steep in countries that mandated BCG policies only during the 20th century as in those that never mandated the vaccine. BCG vaccination may become effective only when a substantial proportion of the population is made resistant to a virus. That is to say, the spread of the virus may be slowed only when there is "herd immunity" that prevents the virus from spreading easily across the population (see a simulation .....
    Document: Notably, the growth curves were as steep in countries that mandated BCG policies only during the 20th century as in those that never mandated the vaccine. BCG vaccination may become effective only when a substantial proportion of the population is made resistant to a virus. That is to say, the spread of the virus may be slowed only when there is "herd immunity" that prevents the virus from spreading easily across the population (see a simulation in (15) ).

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