new york city health department. >> temperature reading from last night. >> the u.s. department of agriculture confirmed another case of bird flu. >> 1.5 million statepread of -- >> it is very critical that they control -- >> you have to respond to the challenge. >> three latest victims of the new respiratory virus calls mers have come from middle eastern countries. they believe it originated in bats or camels. >> causes rapid kidney failure. >> as the zika virus continues to infect people across the globe -- >> the outbreak started in brazil. a suspected link to severe birth defects. >> typically transmitted by mosquitos. >> when the weather starts to warm up more of those mosquitos could -- >> i believe there's such a thing as being too late. >> there's a growing concern -- ♪ >>> our home. you can almost hear the biological chatter. >> ebola. zika virus. >> how contagious -- >> just when technology and science were supposed to make us safer, we suddenly seem more vulnerable to outbreaks. >> whether we like it or not, our world is globalizing ever more. that's not only true for markets and production, but it's also true for behaviors, for diseases.