Early summer meningoencephalitis (ESME)
Early summer meningoencephalitis is caused by infection with the ESME virus. There are three subtypes of the ESME virus that appear in different endemic areas (Central Europe, Sibiria, South East Asia). The virus is transmitted via a tick bite, where the tick serves as the vector. Small rodents, hedgehogs, and sheep are the most common pathogen reservoir. A vaccination is possible.