China pushes to expand virus origin search beyond its border
Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Mar. 31, 2021 07:29 AM EDT
Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, listens to a journalist's question during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, listens to a journalist's question during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Mar. 31, 2021 07:29 AM EDT
Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, listens to a journalist's question during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, listens to a journalist's question during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Mar. 31, 2021 07:29 AM EDT
Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Liang Wannian, the Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks during a press conference in Beijing, Wednesday, March 31, 2021. Chinese health officials pushed Wednesday for expanding the search for the origins of COVID-19 beyond China, one day after the release of a World Health Organization report on the issue. (AP Photo/Mark Schiefelbein)

Mar. 31, 2021 07:27 AM EDT