Abstract
In recent decades, an attention has been given to new-appearing infections, currently be referred to as the emerging infectious diseases. West Nile fever is ranked among these infections i.a.
The Hantavirus infections are classified in that group as well. In natural foci, they circulate among rodents even in Europe including the Czech Republic.
In the nineties of the last century, Hendra and Nipah viruses were discovered and revealed mainly as the causes of encephalitis. Marburg and Ebola viruses are counted among the deadliest microorganisms humankind has ever met. New phenomenons are both SARS and avian influenza.
Both disorders are characterized by an involvement of respiratory tract.