An organism causes gastroenteritis and is possibly transmitted through the respiratory route in addition to the fecal-oral route Noroviruses.
The term "gastroenteritis" refers to irritation and inflammation of the digestive tract, including the stomach and intestines.
The most common causes are viral agents, bacteria, parasites and food poisoning, and the most common complaints are diarrhoea, abdominal pain, cramps, nausea and vomiting.
Noroviruses are the leading cause of adult gastroenteritis in North America and are responsible for projectile vomiting in infected individuals.
Thus, Noroviruses is the answer.
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