Click here for the latest coronavirus news, which the BDN has made free for the public. You can support our critical reporting on the coronavirus by purchasing a digital subscription or donating directly to the newsroom. AUGUSTA, Maine — Maine’s credit rating remains unchanged despite the severe coronavirus-related economic shock, a positive sign for the state’s future ability to invest in infrastructure and other projects. Half a dozen states have seen their credit ratings decline since the coronavirus outbreak began, but two firms, Moody’s and Standard & Poor’s, determined that Maine has a stable outlook, the governor’s office announced Wednesday. [Our COVID-19 tracker contains the most recent information on Maine cases by county] A strong credit rating does not mean that Maine will avoid fiscal challenges.