A significant clue to the discovery that hand , foot , and mouth disease is making cambodian children sick came when institut pasteur du cambodge virologists tested not just cerebrospinal fluid , but also throat and rectal samples .
But tests at institut pasteur du cambodge in phnom penh point to hand , foot , and mouth disease , a contagious and sometimes fatal illness , head virologist philippe buchy wrote scienceinsider in an e-mail .
