Medics first discovered noroviruses in 1972 using an electron microscope ... to be put under quarantine in Wiesbaden after 67 tourists fell ill, or roughly every second guest. A norovirus outbreak ...

because “you can shed billions of norovirus particles that you can’t see without a microscope,” the CDC says. “It only takes a few norovirus particles to make you and other people sick.” ...

When a person is sick, they can shed billions of norovirus particles that can't be seen without a microscope. Maintaining proper hygiene, washing fruits and vegetables, cooking food thoroughly and ...

Cases of norovirus and bird flu are on the rise compared ... This colorized electron microscope image shows avian influenza A virus (bird flu). Cases of bird flu are on the rise in the U.S ...

Cases of the highly contagious norovirus are on the rise in the U.S. as the Centers for Disease Control and Prevention reported a significant jump in outbreaks in early December, according to the ...