Final Call News Concerns about safety and efficacy topped reasons why some medical personnel, firefighters and others are not taking Covid-19 vaccines. Many frontline nurses say information about the vaccines is lacking. Katarina Thompson, a registered nurse, is also the Service Employees International Unionâs chief spokesperson on Covid-19 for its healthcare workers. Her number one goal, especially with the coronavirus surging, is looking at ways to keep health workers safe versus any vaccination risks. âWe encourage our members to strongly consider becoming vaccinated for the flu for the influenza vaccine at the same time as we fully defend their rights as individuals to decline the flu vaccine. And we continue to defend the rights of our members to decline the covid vaccine,â explained Ms. Thompson.