we think that information is going to come out, will come out. >> david louie. >>> in the south bay, vta officials say they do not have a date yet for when light rail service will resume following last week's deadly shooting i its guadalupe light rail hall. vta officials are encouraging officials to seek counseling and support during what is obviously a very tough time. and that means taking time off. >> to support each other. to take advantage of counseling services and other resources. so we're not requiring them to come to work while they need that time. >> reporter: now a fund has been set up by working partnerships usa and the council to provide spoártd for victim's families. as we said at the top. a news conference is under way now, provide support for victim's families. as we said, a news conference is under way right now. here's the sheriff. >> they succumb to their injuries. this is such a horrific tragedy. and our heart goes out to the vta family and everyone right now who is suffering. we'll never forget those innocent victims who's lives were taken by a crazed coward. the

david louie shows why the early research could lead to a possible treatment. >> reporter: it is wellnown the stress the covid-19 virus puts on the respiratory system. now researchers have discovered how the virus appears to be inflaming the brains of patients who die from covid. researchers at stanford madison collaborated with counterparts at germany starlink university. an analysis a brain tissue showed inflammation that creates brain fog or cognitive decline. similar to symptoms of alzheimer's and parkinson's. >> i think it will be interesting and important to figure out whether this inflammation could actually be targeted or treated, and whether inflammatory treatments could help alleviate some of these symptoms. >> reporter: the inflammation is indicated by the brown marks in this illustration. that triggered the immune system to respond by sending a surge of t cells to fight the virus. the brain tissue showed no presence of the covid-19 virus, which stanford researchers can't fully explain. to the t cells destroy infected cells to respond to find no virus present? the prelimina

david louie shows why this early research could lead to a possible treatment. >> reporter: is well-knownus puts on the respiratory system. now researchers have discovered how the virus appears to be inflaming the brains of patients who die from covid. researchers at stanford medicine collaborator with counterparts in germany. an analysis a brain tissue from eight patients showed inflammation that creates brain fog or cognitive decline. similar to symptoms of alzheimer's and parkinson's. >> i think it will be interesting and important to figure out whether this inflammation could be targeted or treated and whether in inflammatory treatments could help alleviate some of these symptoms. >> reporter: the inflammation is indicated by the brown marks in this illustration. that triggered the body's immune system to respond by sending a surge of tea some. the brain tissue showed no presence of the covid-19 virus which stanford researchers can't fully explain. did the t cells destroy infected cells or to find no virus present? the findings were published this week. more research needs to be done