how does it spread?
Humans and, occasionally, domestic animals are the carriers of paratyphoid fever.
Paratyphoid fever
Humans and, occasionally, domestic animals are the carriers of paratyphoid fever. 
who was the president that served the shortest term William Henry Harrison which country did he belong to? United States where was he born? Charles City County, Virginia. who were his parents? Benjamin Harrison V and Elizabeth (Bassett) Harrison. did he have any other career apart from that of a politician? Yes, military career. how did he step into politics? He campaigned among his friends and family for a post in the Northwest Territorial government. and did he hold any position in the government before becoming the president? As acting territorial governor. of which place? Indiana Territory. why was his presidential tenure so short? He died of either typhoid, pneumonia, or paratyphoid fever 31 days into his term, becoming the first president to die in office and the shortest-serving president in U.S. history. what are the symptoms of the third disease? Fever, headache, abdominal pain and malaise. what are its causes? Any of three strains of "Salmonella" paratyphoid: "S." Paratyphi A, "S. schottmuelleri" or "S. hirschfeldii".
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Paratyphoid fever [SEP] Carriers
Humans and, occasionally, domestic animals are the carriers of paratyphoid fever. Members of the same family can be transient or permanent carriers. In most parts of the world, short-term fecal carriers are more common than urinary carriers. The chronic urinary carrier state occurs in those who have schistosomiasis (parasitic blood fluke). Continuing to shed "Salmonella" Paratyphi is possible for up to one year, and during this phase, a person is considered to be a carrier. The chronic carrier state may follow acute illness, or mild or even subclinical infections. Chronic carriers are most often women who were infected in their middle age.