3 ms·
From the CDC (http://www.cdc.gov/vaccines/vpd-vac/measles/vacc-in-short.htm http://www.cdc.gov/vaccines/vpd-vac/measles/vacc-in-short.ht...): > This replicatio
by fabian2k 12y ago
From the CDC (http://www.cdc.gov/vaccines/vpd-vac/measles/vacc-in-short.htm http://www.cdc.gov/vaccines/vpd-vac/measles/vacc-in-short.ht...):
> This replication causes the body to develop an immunity that, in 95% of children, lasts for a lifetime.
The seven years claim is clearly false. Vaccines don't work 100%, but they can grant lifelong protection.