Q.いつになったらCovid-19のワクチン摂取を受けられるのか？
A. ２０２１年の後半には成人は皆摂取できる。但し幼児はまだ研究が必要ため未定。
Supplies will increase over time, and all adults should be able to get vaccinated later in 2021. However, a COVID-19 vaccine may not be available for young children until more studies are completed.
Q.ワクチン接種は有料？
A.基本的に無料。但し手数料のようなアドミン料金はかかる可能性がある。
Vaccine doses purchased with U.S. taxpayer dollars will be given to the American people at no cost. However, vaccination providers will be able to charge an administration fee for giving the shot to someone.
https://www.cdc.gov/coronavirus/2019-ncov/vaccines/faq.html
Q.mRNAワクチンとは？
A. たいていのワクチンは弱った菌を体に入れて免疫反応を起こさせるが、mRNAワクチンは生きたCovid-19ウィルスを使わない。mRNAワクチンは代わりに人体の細胞にプロテイン（Covid-19の表面にあるスパイクプロテイン）の作り方を指示して免疫反応を起こす。その結果、抗体が作られる。
To trigger an immune response, many vaccines put a weakened or inactivated germ into our bodies. Not mRNA vaccines. Instead, they teach our cells how to make a protein—or even just a piece of a protein—that triggers an immune response inside our bodies. That immune response, which produces antibodies, is what protects us from getting infected if the real virus enters our bodies.
https://www.cdc.gov/coronavirus/2019-ncov/vaccines/different-vaccines/mrna.html
Q. 安全性は？
A. 安全らしいがまだ実績が無い。
https://vdata.nikkei.com/newsgraphics/coronavirus-vaccine-race/
