CNS photo/Marko Djurica, Reuters A man receives a second dose of the Pfizer-BioNTech vaccine against COVID-19 at the Belgrade Fair in Belgrade, Serbia, April 13, 2021. CNS photo/Marko Djurica, Reuters A man receives a second dose of the Pfizer-BioNTech vaccine against COVID-19 at the Belgrade Fair in Belgrade, Serbia, April 13, 2021. ROME -- Members of the Catholic Church, especially religious working in health care and schools, have an important opportunity and duty to educate people about COVID-19 and to counter resistance to vaccinations, said an expert on the Vatican's COVID-19 commission. Women religious and Catholic organizations who serve others every day and have people's trust are "our best hope for safe and fair distribution of vaccines as well as the best tool for convincing people of the safety and importance of taking the vaccines," said Sister Carol Keehan, a nurse and Daughter of Charity.