Dr. Marisa Donnelly

Dr. Marisa Donnelly

Contributing Epidemiologist

Dr. Marisa Donnelly, a senior epidemiologist with wastewater monitoring company Biobot Analytics, has worked in applied public health for over a decade, specializing in infectious diseases and emerging public health threats. She holds a PhD in epidemiology and has led multiple outbreak investigations, including at the California Department of Public Health and as an Epidemic Intelligence Service Officer at the Centers for Disease Control and Prevention. Marisa has conducted research in Peru, focusing on dengue and Zika viruses, as well as the mosquitoes that spread them. She is Healthbeat’s contributing epidemiologist for New York in partnership with Your Local Epidemiologist. She lives in New York City.

Does it feel like everyone around you is sick right now? Number of people with flu is high, and norovirus is surging.

Public health often gets attention when something scary happens. Here are some noteworthy recent accomplishments.

Respiratory viruses will likely increase over the holidays as many of us expand our social connections. But we have several tools to help keep us from getting sick.

Two to three women die of pregnancy-associated factors each week in New York, on average. The majority of these deaths are preventable.

RSV is on the rise and affecting a lot of young children. The good news is that there are now two key ways to protect babies.

When we see whooping cough increase, our response as a community is mainly aimed at protecting babies through vaccination and ensuring those around babies are vaccinated.

Even though we are seeing low levels of Covid-19, influenza, and RSV, the percent of clinic visits for general fever, cough, or runny nose is similar to last year.

Poor air quality from wildfire smoke poses health risks to everyone, with fine particles that can penetrate deep into the lungs and enter the bloodstream.

The number of flu cases in New York state is still low but starting to increase quickly. It’s risen by 12% since last week.

The New York state and New York City health departments have begun releasing data. Here's the State of Affairs.