American foulbrood is an infectious disease that devastates honeybee hives. Scientists say they've created a vaccine for it, despite a big hurdle: Bees don't have antibodies.
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.
Statistics on health problems and death are sobering. But an author of the report finds reasons to be hopeful as well.
A new map shows where the risk is highest for humans catching diseases from bats. But the researchers urge humans to remember: Bats do a lot of good, too!