A lot of things are worth questiojing where vaccines are concerned in third world countries. However, i have to appaud their ability to reach certain places. We have to admit that moving to certain areas in Nigeria is difficult.
However, how good these vaccines are is difficult to ascertain.
They really work hard in that regards and its because they have to report to their international NGO sponsors. My son took measles vaccine but has come down with measles twice within two years now. I don't know if it is normal or not. Talking about effectiveness
I think the measles is normal. But I don't know. Maybe I'm just speaking from a Nigerian POV