Global Health

With publicity campaigns, radio jingles and pinups, the government helped eliminate the parasitic disease. The Centers for Disease Control and Prevention is still fighting malaria at home and abroad.

Gunmen staged new attacks Wednesday on health workers carrying out a nationwide polio vaccination program. On Tuesday, six workers were killed as they went house to house.

The preservative thimerosal keeps vaccines from going bad in places where there is no refrigeration. Anti-vaccine activists say it should be banned because it contains mercury, but public health officials insist it's safe.