Home Children and their parents wait at an outpatient area at a children hospital in Beijing on November 23, 2023. The World Health Organization has asked on November 23, 2023, China for more data on a respiratory illness spreading in the north of the country, urging people to take steps to reduce the risk of infection. China has reported an increase in “influenza-like illness” since mid-October when compared to the same period in the previous three years, the WHO said. (Photo by Jade Gao / AFP) (Photo by JADE GAO/AFP via Getty Images) Children and their parents wait at an outpatient area at a children hospital in Beijing on November 23, 2023. The World Health Organization has asked on November 23, 2023, China for more data on a respiratory illness spreading in the north of the country, urging people to take steps to reduce the risk of infection. China has reported an increase in "influenza-like illness" since mid-October when compared to the same period in the previous three years, the WHO said. (Photo by Jade Gao / AFP) (Photo by JADE GAO/AFP via Getty Images)

Children and their parents wait at an outpatient area at a children hospital in Beijing on November 23, 2023. The World Health Organization has asked on November 23, 2023, China for more data on a respiratory illness spreading in the north of the country, urging people to take steps to reduce the risk of infection. China has reported an increase in “influenza-like illness” since mid-October when compared to the same period in the previous three years, the WHO said. (Photo by Jade Gao / AFP) (Photo by JADE GAO/AFP via Getty Images)

Children and their parents wait at an outpatient area at a children hospital in Beijing on November 23, 2023. The World Health Organization has asked on November 23, 2023, China for more data on a respiratory illness spreading in the north of the country, urging people to take steps to reduce the risk of infection. China has reported an increase in “influenza-like illness” since mid-October when compared to the same period in the previous three years, the WHO said. (Photo by Jade Gao / AFP) (Photo by JADE GAO/AFP via Getty Images)

MUMBAI, MAHARASHTRA, INDIA – 2023/11/25: Students from Gurukul school of art seen holding a poster that creates awareness about Pneumonia virus H9N2 spreading amongst children in China. There has been sudden surge in respiratory illness in China and many children have been admitted to the hospital with respiratory problem baffling the doctors there. (Photo by Ashish Vaishnav/SOPA Images/LightRocket via Getty Images)
A man in hazmat suit sprays disinfectant against the COVID-19 in a transport hub next to Yanqing that host the alpine skiing and sliding venues ahead of the 2022 Beijing Winter Olympics, on January 31, 2022. (Photo by Fabrice COFFRINI / AFP) (Photo by FABRICE COFFRINI/AFP via Getty Images)