持久。另外，没有那些脂质体，副作用少。尽管有报道说血栓之类的，俺又不是中青年妇女，没事儿。

https://www.cnn.com/2021/10/21/health/acip-cdc-vaccine-boosters/index.html
 

CDC officials said they'd issue more guidance on boosters in an upcoming report.

They said, for instance, that young women, who have a higher risk of rare blood clots from the J&J Janssen vaccine, might want to consider using one of the mRNA vaccines -- Pfizer's or Moderna's -- as a booster, while young men, who have a higher risk of an inflammatory heart condition known as myocarditis from an mRNA vaccine, might prefer Janssen's vaccine for a booster if needed.

……………

"The Johnson & Johnson vaccine provided 94% protection in the U.S. against COVID-19 when given as a booster following the single-shot Johnson & Johnson vaccine, and due to its unique mechanism of action, offers long-lasting, durable protection," Dr. Paul Stoffels, chief scientific officer at Johnson & JOhnson, said in a statement. "We remain confident in the benefit it will provide to millions around the world."