Fox News medical contributor Dr. Marc Siegel on what to know about bird flu and why it is important to not look directly at the solar eclipse without proper glasses Forty-seven tigers, three lions and a panther have died in zoos in south Vietnam due to the bird flu, state media said. According to the Vietnam News Agency (VNA), the mammals died at the private My Quynh safari park in Long An province and the Vuon Xoai zoo in Dong Nai, near Ho Chi Minh City.

According to test results from the National Centre for Animal Health Diagnosis, the animals died "because of H5N1 type A virus," VNA said. The report noted that no zoo staff members were in close contact with the animals that contracted the disease. FIRST CASE OF HUMAN BIRD FLU DIAGNOSED WITHOUT EXPOSURE TO INFECTED ANIMALS, CDC SAYS In this photo taken 23 March 2007 shows an adult tiger walking inside a cage at a public zoo in Hanoi.

(HOANG DINH NAM/AFP via Getty Images) The World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC) have said that there has been an increase in outbreaks among mammals caused by influenza viruses, including avian influenza A (H5). In the U.S.

, a patient in Missouri was diagnosed with bird flu in September. The patient, who had underlying medical conditions, was successfully treated with antiviral medications at the hospital and has since been discharged, according to the Missouri Department of Health and Senior Services (DHSS). A cow is shown by an exhibitor at t.