Add Yahoo as a preferred source to see more of our stories on Google. Jasmine, 11, receives an anti-flea vaccination at a free vaccine clinic in San Francisco. Flea-borne typhus infections tend to ...

Scientists have unveiled some of the evolutionary intricacies of rickettsial pathogens by analyzing over a decade's worth of genomic data. Some species of Rickettsia cause such disease as epidemic ...

Medieval life has made its way to modern-day Los Angeles, where groups of 4,000 or more homeless people huddle together on city streets constituting a “typhus zone.” In the heart of this west coast ...

Flea-borne typhus caused by Rickettsia Typhi was almost eradicated from the United States, but 76-year-old Dana Clark, a San Antonio musician, experienced firsthand that typhus is making its comeback.

The city of angels is dealing with a nasty outbreak of a disease spread by fleas. Last Friday, California health officials reported that there has been an epidemic of flea-borne typhus within the Los ...

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Health officials in Orange County are working hard to stop a single incident of typhus from becoming an outbreak. But what is typhus and how do you spot it? Main Story: Seeking feral cats to stem ...