That's when a vaccine for plague was invented — and authorities began to consider requiring proof of vaccination before visiting pilgrimage sites in India. The debate has raged ever since.
Some years the virus would wipe out a tenth of the population, earning New Orleans the nickname "Necropolis." The gruesome disease killed thousands, scapegoated immigrants and upheld white supremacy.
Brazil has launched a massive vaccination campaign to protect against a disease that has killed hundreds of people. But it's facing huge challenges, including a shortage of the yellow fever vaccine.
Officials are working on an emergency import deal for another vaccine that is not licensed in the U.S. Even then, a limited number of doses will be available at only a small number of clinics.
An outbreak in Angola and the Democratic Republic of Congo has raised concerns about the infamous and fearsome disease — once a scourge of the U.S., Panama and Spain.
The message about reducing the risk from the Aedes aegypti mosquito is the same today as it was 70 years ago. This time there's just a new virus involved.
Researchers set hungry mosquitoes loose on identical and fraternal twins. They found that inherited genes do play a role in making you a mosquito magnet.
