members of a chinese medical expert team inspect a covid-19 sampling site in vientiane, laos, may 7, 2021. a team of chinese medical experts, along with medical materials, arrived in lao capital vientiane on tuesday to assist laos in fighting the covid-19 pandemic. the medical team will help the lao side in upgrading the precaution and treatment scheme, improving the technical level and response capabilities, studying the trend of the covid-19 epidemic and making corresponding recommendations. (chinese medical expert team/handout via xinhua)