The numbers of Florida residents testing positive for COVID-19 have decreased the past two weeks, but the coronavirus has killed more than 78,500 residents since the pandemic started in 2020, according to data released Friday. The state had a reported 54,353 new cases during the week that started Aug. 5, the first time in at least 10 weeks that it had fewer than 65,000 new cases, according to the data from the Florida Department of Health.