Comment on Are MRNA vaccines any riskier than other vaccines?
SandLight@lemmy.world 5 months agoHerd immunity only works if the herd is immune. If only a portion of the herd is immune, the rest of the herd will spread disease.
It requires a critical mass to work, and it protects those who can not get the vaccine for medical reasons (like allergic reactions, etc.)
Nollij@sopuli.xyz 5 months ago
It also only works if the herd remains immune. We are now seeing a return of diseases that had previously been eliminated (not eradicated), due to a decline in vaccinations. Examples include measles and whooping cough.