Diseases in Search of Viruses

S(J ? become a threat to both children and adults. Previously undescribed conditions as myalgic encephalomyelitis or Royal Free disease, aseptic meningitis with an a^hem and little known syndromes such as herpangina, pharyngo-conjunctival fever cjjj Ornholm disease have achieved a position of interest and even of importance as of ,S.es of morbidity. Moreover, the development of new techniques for the cultivation H^lr.Uses has led to the realization of a method of control of certain diseases and to a 'cia k regard to diagnosis. These changes have affected the work of both clinoUtlns and microbiologists, and yet there has also arisen a considerable divergence of