HOST AND ENVIRONMENTAL FACTORS IN INFECTIONS.
D000375:Aging; D003141:Communicable Diseases; D004777:Environment; D005826:Genetics, Medical; D006801:Humans; D007109:Immunity; D012141:Respiratory Tract Infections; D012723:Sex; D012924:Social Conditions; D013203:Staphylococcal Infections; D013290:Streptococcal Infections
AGING; COMMUNICABLE DISEASES; ENVIRONMENT; GENETICS, HUMAN; IMMUNITY; RESPIRATORY TRACT INFECTIONS; SEX; SOCIAL CONDITIONS; STAPHYLOCOCCAL INFECTIONS; STREPTOCOCCAL INFECTIONS