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So the measles vaccine (like MMR) is a live virus vaccine. Does this mean that MMR wipes the memory of previous vaccinations? Does giving MMR in a child's secon
by retrogradeorbit 9y ago
So the measles vaccine (like MMR) is a live virus vaccine. Does this mean that MMR wipes the memory of previous vaccinations? Does giving MMR in a child's second year erase, say, the accellular pertussis immunity attained via DTaP in the first year?
- driverdan 9y agoNo. It never takes hold, your immune system kills it.
- wonderwonder 9y agoThe virus is "live" but it is attenuated, meaning that it has been altered to be less harmful and virulent.
- epmaybe 9y agoNo, I don't think so. Live virus vaccines are generally attenuated so that they don't elicit the same effects as the normal virus. However, if they didn't delete that specific virulent quality that causes immunosuppression, perhaps what you're saying could happen. i don't think any data has shown that to be the case though.
- maxerickson 9y agoIt's the other way around. The vaccine is attenuated live virus, it doesn't (normally) have the consequences of a measles infection. The immune system is not suppressed by the vaccine and because the vaccine prevents the disease, the immune system is not suppressed by measles either.