Here are the latest news updates from HT Epaper The Delhi govt has barred eight labs from carrying out coronavirus tests citing "flouting of testing protocols and taking too long to report results". The government also believes that the labs, by testing asymptomatic and low-risk individuals in violation of the testing guidelines, are effectively creating a bottleneck where people who desperately need to be tested have to wait. Blood groups may be a key factor in making people susceptible to developing severe respiratory problems during a Covid-19 infection, according to a study of 1,600 patients in hot spot cities in Italy and Spain. The study has suggested those with blood group A positive were most at risk while those with O were protected to some degree. ((Page 9)) Wednesday night’s minor tremor in Noida was the fourteenth to hit Delhi and the National Capital Region over the past two months, but the increased frequency may not necessarily indicate a major one is coming, say seismologists. Still, monitoring them is key to being prepared , they add.