Highly contagious strains of coronavirus from the UK and South Africa have been identified in residents of Washington, D.C., the head of the city’s health authorities said.
Maryland and Virginia reported their first cases of new strains a few days ago.
Lacwandra Nesbitt, director of health services for the District of Columbia, said she suspected new strains were already circulating in the area.
On Wednesday night, her suspicions were confirmed: The Centers for Disease Control and Prevention identified three patients in the city with a British variant and one with a South African variant.
Nesbitt warned that there could be many more cases of infection.