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September 26, 2020 | 11:06am Enlarge Image Mike Ryan, executive director of WHO's emergencies program, speaks at a news conference in February. Denis Balibouse/Reuters About a third of New Yorkers and less than a tenth of American adults were exposed to the coronavirus by the end of July, a new study of dialysis patients found.…

BASEL, Switzerland — A new study provides compelling evidence that coronavirus spreads between humans and animals. Researchers studying 16 mink farms in the Netherlands say that SARS-CoV-2, the virus that causes COVID-19, was not only transmitted from human to mink, but vice versa. Just about nine months into this pandemic, the scientific community is still unsure…

A salon worker using a curling iron.Photo: Justin Sullivan (Getty Images)A new large population study looks to clarify the theorized connection between hair dye and cancer. The study found no link between ever using hair dye and an increased risk of most types of cancer in women. However, it did find a possible relationship between…