Only 99 Ebola cases were reported worldwide last week. That's the lowest weekly count since June. But getting down to zero cases is still a long way off.
People from 7 months to 70 years old have fallen ill, and one quarter of the victims have been hospitalized. California officials say it's proof yet again of how easily measles spreads.
Moving the American Gut Project to a biotech hub like San Diego may speed the jump from basic research to real treatments. At least that's microbe tracker Rob Knight's plan.
The vaccine is only about 23 percent effective against the dominant flu strain, according to the Centers for Disease Control and Prevention. That's because the strain mutated slightly.
An outbreak among visitors to two California theme parks shows once again that this supercontagious virus doesn't respect borders. Most of the afflicted people had not been vaccinated.
A natural compound kills germs that have become resistant to antibiotics, researchers say. If it works in humans, it could help combat diseases like tuberculosis.
A woman is thought to be spreading Ebola in a remote village. So health workers spend four hours trekking through the bush to track her down. By the time they make it, it's too late.
In July, the Goats and Soda blog was born. We came into a world obsessed with Ebola. But our readers also loved stories about chocolate, bed rails and jet-setting viruses.
Inmates in the U.S. have a high rate of infection with chronic hepatitis C — up to 35 percent or more by some estimates. New drugs introduced this year can cure the disease quickly, but at a cost.
While some Americans worried that Ebola would spread around the U.S., a new mosquito-borne virus flew right in. It sickened more than 2,000 Americans and nearly a million people across the Caribbean.