New York State Health Commissioner Dr. Mary Bassett called the detection of polio in New York City alarming. Bassett said local and federal health officials are aggressively assessing how far polio has spread in the city and in New York state. Polio can result in permanent paralysis of the arms and legs and death in some cases. Health officials are calling on people who are not vaccinated to get their shots immediately.

More than 10,000 Americans have now tested positive in the monkeypox outbreak across the U.S., according to figures published late Wednesday by the Centers for Disease Control and Prevention, as federal health officials say they are still racing to contain the virus.

The features of the newly emerging SARS-CoV-2 Omicron BA.2.75 subvariant

We spoke to experts to better understand how monkeypox spreads, what activities are riskiest at this time, and how to avoid infection as cases rise globally.

Cases of BA.2.75 Detected in Illinois. What Experts Are Saying About New COVID Variant

Share of Americans who say they are worried about contracting COVID-19 or monkeypox in the next three months

Known cases exceed 3,500 in both the U.S. and Spain

Monkeypox could spread well beyond communities of gay and bisexual men, WHO says

W.H.O. Declares Monkeypox Spread a Global Health Emergency There have been more than 16,000 cases in 75 countries, overwhelmingly among men who have sex with men.