claim: Kenny Chesney is a philanthropist.
evidence: Avibirnavirus is a genus of viruses , in the family Birnaviridae .. Birnaviridae. Birnaviridae. viruses. viruses. Young chickens and other fowl serve as natural hosts .. There are currently only one species in this genus  : the type species Infectious bursal disease virus .. Infectious bursal disease virus. Infectious bursal disease virus. Diseases associated with this genus include  : IBDV causes severe inflammation of the bursa of fabricius .. The disease causes considerable morbidity and mortality in an acute form or as a consequence of severe immunosuppression provoked by the destruction of immature B-lymphocytes within the bursa of fabricius .