Okay, I tried reading the vaccine's site. Are these the correct ones? https://www.who.int/news-room/feature-stories/detail/the-oxford-astrazeneca-covid-19-vaccine-what-you-need-to-know?gclid=Cj0KCQjwna2FBhDPARIsACAEc_WrE_TtvBY9aAl71CMR1sNwLm0cDE-2qr98DcT9wuJ5I_SmpSbsPJsaAi0YEALw_wcB
[URL unfurl="true"]https://www.cdc.gov/vaccines/covid-19/info-by-product/clinical-considerations.html#CoV-19-vaccination[/URL]
Here it seems that they are only recommending to delay the vaccination so as to improve efficiency. The wording of the WHO site is "may wish to defer" which is very different from what it should say if it was very dangerous. Maybe it's difficult to find the info in the sea of Google's recommendations.