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18 hours ago · Respiratory syncytial virus ( RSV ), [a] also called human respiratory syncytial virus ( hRSV) and human orthopneumovirus, is a contagious virus that causes infections of the respiratory tract. It is a negative-sense, single-stranded RNA virus. [2] Its name is derived from the large cells known as syncytia that form when infected cells fuse.
18 hours ago · Bubonic plague is a zoonotic disease, as are salmonellosis, Rocky Mountain spotted fever, and Lyme disease. A major factor contributing to the appearance of new zoonotic pathogens in human populations is increased contact between humans and wildlife.
