Maryland confirms first human case of West Nile virus in 2024. How to fight it

The first case of West Nile virus in an adult in the state in 2024 has been confirmed by the Maryland Department of Health.

Although the case was reported in the Baltimore metropolitan area and the patient has recovered from the infection, the positive test also confirms the presence of the virus in the state's mosquitoes.

The virus is transmitted to humans by mosquitoes that become infected by birds that are already infected. In rare cases, the virus is transmitted through organ donations, blood transfusions, breastfeeding, or from pregnant mothers to their fetuses.

“We are in the season when West Nile virus can spread in Maryland,” said Dr. Nilesh Kalyanaraman, assistant secretary for public health services. “We urge people to be vigilant and take steps to avoid infection and eliminate standing pools of water where mosquitoes can breed.”