As COVID surges in China, US begins testing more travelers


              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Shubham Chandra, center, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Signs indicating which countries are eligible to participate in a genomic coronavirus surveillance program are displayed at a testing site at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights walk past a location to participate in anonymous COVID testing for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
            
              Shubham Chandra, returning home to New York from Cancun, Mexico, takes an anonymous COVID tests for study purposes after arriving at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Chandra knows how dangerous the coronavirus can be: He lost his father during the pandemic. So when he cleared customs and saw people offering anonymous COVID-19 testing, he was happy to volunteer. (AP Photo/Shelby Lum)
            
              Passengers disembarking from international flights take anonymous COVID tests for study purposes at Newark Liberty International Airport in Newark, N.J., Wednesday, Jan. 4, 2023. Amid a COVID-19 surge in China, the U.S. is expanding its traveler-based genomic coronavirus surveillance program, an early warning system for detecting new variants. (AP Photo/Seth Wenig)
As COVID surges in China, US begins testing more travelers