The Russian Federation Office for the Moscow Region started an investigation after information about a possible case of monkeypox The Russian Federation Office for the Moscow Region reported that they started a sanitary and epidemiological investigation after information about a possible case of chickenpox; Five people are under medical supervision. "In connection with receiving information about a possible case of chicken pox, experts from the Russian Federation office for the Moscow region immediately began a sanitary and epidemiological investigation," it said in a statement on Thursday.