INFLUENZA B VIRUSES
\ˌɪnfluːˈɛnzə bˈiː vˈa͡ɪɹəsɪz], \ˌɪnfluːˈɛnzə bˈiː vˈaɪɹəsɪz], \ˌɪ_n_f_l_uː_ˈɛ_n_z_ə b_ˈiː v_ˈaɪ_ɹ_ə_s_ɪ_z]\
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Species of the genus INFLUENZAVIRUS B that cause INFLUENZA and other diseases primarily in humans. Antigenic variation is less extensive than in type A viruses (INFLUENZA A VIRUS) and consequently there is no basis for distinct subtypes or variants. Epidemics are less likely than with INFLUENZA A VIRUS and there have been no pandemics. Previously only found in humans, Influenza B virus has been isolated from seals which may constitute the animal reservoir from which humans are exposed.
By DataStellar Co., Ltd
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