On February 16, 2021, Connecticut official found Listeria in samples of El Albuelito brand queso fresco cheese collected from a store where a sick person bought Hispanic-style fresh and soft cheeses. Investigators are working to confirm if the Listeria bacteria found in this queso fresco is the same bacteria making people sick in this outbreak.
As of February 11, 2021, seven people infected with the outbreak strain of Listeria monocytogenes have been reported from four states – Connecticut, Maryland, New York and Virginia. Illnesses started on dates ranging from October 20, 2020, to January 22, 2021, with six recent illnesses in 2021.
The true number of sick people in an outbreak is likely higher than the number reported, and the outbreak may not be limited to the states with known illnesses. This is because some people recover without medical care and are not tested for Listeria. In addition, recent illnesses may not yet be reported as it usually takes 2 to 4 weeks to determine if a sick person is part of an outbreak.
Sick people range in age from 45 to 75 years, with a median age of 61. Six people are Hispanic, and 43% are female. All seven people have been hospitalized. No deaths have been reported.
State and local public health officials are interviewing people about the foods they ate in the month before they got sick. Of the four people interviewed, three reported eating at least one type of Hispanic-style fresh and soft cheese and all three reported eating queso fresco. Public health officials are continuing to interview sick people to try to identify a specific type or brand of cheese.