美國家醫學會的指導
https://www.aafp.org/news/health-of-the-public/novavax-booster-authorization.html
…………
give individuals 18 years and older the option to receive a Novavax monovalent booster instead of the bivalent Pfizer-BioNTech or Moderna booster if they have completed a primary vaccination series but have not previously received a COVID-19 booster, and if they do not want to receive (or are allergic to a component in) mRNA vaccines.
………
CDC官方指南，更為嚴格。
https://www.cdc.gov/vaccines/covid-19/info-by-product/novavax/downloads/novavax-standing-orders.pdf
搞重點如下：
If the recipient has never received a COVID-19 vaccine, administer 1 dose of Novavax COVID-19 Vaccine.
（沒打過任何疫苗，才能打第一針Novavax)
If the recipient has received 1 previous dose of:
○ Novavax COVID-19 Vaccine, administer the second dose at
least 3-8 weeks‡ after Dose 1. (Primary series completed)
(而後才能打第二針，算做完全接種）
If the recipient has received 2 previous doses of monovalent Novavax COVID-19 Vaccine, administer a bivalent booster dose. （打了兩針Novavax之後，要打雙價加強針）
If the recipient has received a completed primary series of COVID-19 vaccine (Moderna, Pfizer-BioNTech, Novavax or Janssen), administer a single Novavax booster dose at least 6 months after the last primary series dose to persons 18 years of age and older who have not received a previous booster dose(s) in limited situations.
（這段比較狠，要反複細讀、認真領會。俺的理解：在完全接種至少六個月後，沒有打過其它加強針的，才有資格打Novavax做為加強針）
這疫苗，就是小妾養的受氣包。
