Beijing on alert after COVID-19 cases discovered in school


              People stand in line for COVID-19 tests at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              People stand in line for COVID-19 tests at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              A worker in a protective takes a swab for a COVID-19 test at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              People register for COVID-19 tests at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              People stand in line for COVID-19 tests at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              A worker in a protective takes a swab for a COVID-19 test at a coronavirus testing facility in Beijing, Saturday, April 23, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein)
            
              FILE - Commuters wearing face masks walk in a subway station in Beijing, Friday, April 22, 2022. Beijing is on alert after 10 middle school students tested positive for COVID-19 on Friday, in what city officials said was an initial round of testing. (AP Photo/Mark Schiefelbein, File)
Beijing on alert after COVID-19 cases discovered in school