NEW YORK (PIX11) — A highly contagious virus that causes vomiting and diarrhea has rapidly spread across New York City, with cases nearly doubling from November to December.
While symptoms of norovirus can last one to three days, those infected can continue to spread the virus for up to two weeks, according to the CDC.
There have been 2,350 reported cases of the norovirus illness from October to December, according to the New York City Department of Health and Mental Hygiene. In November, there were 640 cases; however, this number nearly doubled in December, with 1,264 cases reported.
Data from the Health Department shows that there were only 1,016 reported cases in the same three-month span in 2023.
| Diagnosis month | 2022 case count | 2023 case count | 2024 case count |
| October | 184 | 214 | 446 |
| November | 254 | 314 | 640 |
| December* | 470 | 488 | 1,264 |
The table shows the number of reported cases. Officials tell PIX11 News that the actual number of cases could be much higher.