Here's more good news for those who need coronavirus vaccines the most

Another coronavirus vaccine candidate seems to be effective and safe for older adults who were enrolled in a limited study. The results are preliminary, and the trials were limited to only 20 participants. But Moderna said its mRNA vaccine is safe and effective for people older than 56. Vaccines might not be as effective for the elderly, who are have a higher risk of developing serious symptoms. Moderna's drug produced neutralizing antibodies and T cells in older patients, the company said. Gett...