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A comment on Viral hepatitis: A silent epidemic killing more people than HIV, malaria or TB. Parent comment

Re:Viral hepatitis: A silent epidemic killing more people th... by amluto on Friday December 07, 2018 @02:46PM (#18630895)
It’s not just that. Some vaccines are less than 100% effective. When everyone is vaccinated, the disease generally doesn’t spread. When enough people aren’t vaccinated, the disease can spread to some fraction of vaccinated people as well.
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