Researchers behind a widely cited mortality model on Tuesday revised their projection for Covid-19 deaths in the United States to more than 147,000 as restrictions continued to be relaxed around the country sometimes prematurely.(Reuters file photo) COURTESY BY: https://www.hindustantimes.com/ Researchers behind a widely cited mortality model on Tuesday revised their projection for Covid-19 deaths in the United States to more than 147,000 as restrictions continued to be relaxed around the country sometimes prematurely. It is 10,000 more than the previous estimate. The new estimates from the Institute of Health Metrics…