My sister is thinking of taking the Pfizer vaccine because she has asthma and thinks COVID can kill her if she gets the disease. Because of her respiratory illness she's not in the 99.7% survival rate group for COVID. But she's worried about the vaccine causing infertility (pic related) and other problems. I told her that the vaccines are still experimental, not approved by the FDA, and clinical trials finish in 2023. What else should I tell her about the vaccines? Should she take it if COVID is such a threat to people with respiratory problems?