ebola virus has killed more than -- >> in the african country of new guinea it has spread -- >> people know nothing. there's no cure. >> they don't have the resources -- >> governments around the world are calling for new measures. >> the u.s. department of agriculture confirmed another case of bird flu. >> 1.5 million turkeys have been killed to prevent the spread -- >> it's critical that they control this. >> you have to respond to the challenge. >> three latest victims of the new respiratory virus calls mers has come from middle eastern countries. they believe it originated in bats or camels. >> it causes pneumonia and rapid kidney failure. >> as the zika virus continues to infect people across the globe -- >> a link to bird flu. >> the zika virus is transmitted by mosquitoes. >> when the weather warms up, more of those mosquitoes could start -- >> i believe there's such a thing as being too late. >> there's a concern --