Health Check looks into issues around Covid-19 vaccination and pregnant women. Harvard researcher Julia Wu has just done a global survey of attitudes of pregnant women about being vaccinated against Covid-19. Acceptance is highest in low and middle income countries such as India and Latin America. The greatest levels of reluctance were in the US and Russia. Pfizer has started the first trial of a Covid-19 vaccine in pregnant women, which will ultimately involve 4000 women in ten countries in the Americas, Africa and Asia. Should we have waited this long for the first trial in this group of people, seeing that pregnant women are at greater risk of hospitalisation, death and premature birth if they become infected? Claudia discusses the unknowns and risk/benefit considerations around vaccinating pregnant women against the virus, with Johns Hopkins medical ethicist Ruth Faden and maternal immunisation researcher Acuzena Bardiji of the Institute for Global Health in Barcelona. Matt Fox in Boston is our guest of the week, talking about the latest evidence for Covid vaccines being transmission blockers and whether vaccine hesitant people should be paid to be immunised. From a freezing Canadian river bank, Sian Griffiths reports on the health pros and cons of surfing three metre high waves on the ice filled Ottawa River. Presenter: Claudia Hammond Producer: Andrew Luck-Baker Image: Pregnant woman receiving a coronavirus vaccine in Tel Aviv, Israel Credit: Photo by JACK GUEZ/AFP via Getty Images