Connecticut’s largest COVID-19 vaccination site in East Hartford is up and running. Pratt & Whitney’s old runway has been converted into a 10-lane drive-thru clinic. The Community Health Center is hoping to administer between 7,000 and 10,000 vaccinations a week. Officials say the Pfizer vaccine will be available by appointment only to qualified residents, which currently include frontline health care workers, first responders and people 75 and over.