Freakish....

A few days back, i had diarrhoea, fever, coupled with vomitting.
Nothing out of the blue.
Except that two days later, my father came down with fever. Then a day after, my mum vomitted. My maid's stomach felt funny. Then my first sis had fever. Another day after, my second sis vomitted nine times throughout one night.
Yes, i was the host. But i just wonder where i got the virus from. Scary huh?