peter ben embarek says the team wants to investigate the early cases in wuhan and study samples stored by the chin authorities. >> we'll be looking in more detail at the itial cases, human cases that were detected in december '19, looking at the markets, the famous wuhan market, and see what happened there, trying to find out everything that went in and out of that market in the weeks ahead of the event. >> it's unclear whether china will fully comply with the team's requests. the w.h.o. first started asking china last year to allow a full on site investigation, but such a probe did not go ahead raising questions about whether beijing would cooperate. >>> turning to an update on the coronavirus situation here in japan. experts are warning the current wave of infections is putting intense strain on the medical system in the capital. the daily tally of new cases in tokyo has been well over the 1,000 level for much of the past week. 135 people in the capital are now in serious condition. public health experts report the average number of daily cases is up 65% this week compared to a week