Paratyphi, are highly adapted to humans and have no other known natural hosts. Others, such as. Enteritidis, have a broad host range and can infect a wide variety of animals. Some serovars, such as. Arizonae (reptiles), are most adapted to a specific animal species but occasionally infect humans. These nontyphoid. Can cause protean manifestations in humans, including acute gastroenteritis, bacteremia, and extraintestinal localized infections involving many organs. Please click the one you want to look up.