peter chan, hong, an infectious disease specialist at the university of california, san francisco. we're still very worried because we haven't even hit our surge yet. remember we had 3 holidays thanksgiving christmas and new year's. we're still waiting for the repercussions from new years. so even though a small proportion folks do get ost wise, a small proportion or a large number is still streaming many hospital systems. but if you ask me, my biggest worry, it's about a workforce. you know, we've had sick health care workers, sick restaurant workers, sick teachers, i, it's really disrupting all of our ways of life. and that's leading to burnout. 40 percent of nurses and 20 percent of physicians in say that they're in tend to quit within a years. so that's to tell you the scope of what we're talking about. and that was dr. peter chin hong at the university of california, san francisco. speaking with us earlier, kenneth starr know that joke of it has confirmed that he will defend his australian open title in melbourne this month after being granted a medical exemption. reaction to

chan. reporter until en, childr in barcela will keep cycling to school on fridays with the bicibus project. peterthe shrinking world in whic we le, there's increasiny frened international competition for key resources, one of which is wood. and one place to find out how this market works is sivry-rence, in belgium's southern wallonia region, where chinesbuyers sp up local wood that goes on sale at an annual market to then sell it back to european purchasers with a significant markup. reporter: oak is a highly sought after natural source, especially if it's 100 or 200 years d like ese logs. thiey pirson rs a sawmilfter natural soin belum.ecially if it's a fourth geration famy busine, but this year has left him worried about the ture. oak is becoming increasingly expensive and hard to come by. thierry: i still have some trees left over from last year, and some from the year before. so we stilhave wood can press now, b only for e next seven months or so, and then that's it. reporter: the plan had been for his son to take over the sawmill, but now that future is uncertain. the economic situation in w