An elementary school in Yonkers, New York, went through a complete cleanup Monday after a student was diagnosed with Enterovirus D-68, which has so far been linked to seven deaths in the U.S. The virus has affected 922 people in 46 states, mostly children, from mid-August through October.

The female student from Cedar Place Elementary, who was diagnosed over the weekend has since been confined to her home as a precaution and is recovering quickly, according to NBC New York. Meanwhile, school authorities reportedly have asked other parents to keep children at home if they have symptoms like a fever, runny nose, sneezing, coughing, mouth blisters, skin rashes and body aches. Earlier in October, a 21-month-old girl in Michigan and a 4-year-old boy in New Jersey died after testing positive for the virus.

The U.S. Centers for Disease Control and Prevention, or CDC, said in a statement Monday that, of the 1,400 specimens that the agency had tested in its labs, more than half had tested positive for D-68, for which there is no treatment available. Late in September, health officials also began to investigate whether the D-68 form of the Enterovirus is related to a neurological condition that leads to limb weakness and paralysis.

Enterovirus is referred to a cluster of viruses that cause infections and is found in about 15 million people across the U.S. every year. The EV-D68 version causes mild to severe respiratory problems and was first discovered in California in 1962. The disease spreads by coming in contact with the infected person but can be prevented by disinfecting surfaces and washing hands often.