Baltimore City Health Department.
D006801:Humans; D009980:Influenza A virus / Q000472:pathogenicity; D007252:Influenza Vaccines / Q000302:isolation & purification*; D007251:Influenza, Human / Q000517:prevention & control; D008396:Maryland; D011790:Quarantine; D014611:Vaccination; D014774:Virulence
D007252:Influenza Vaccines