Although coronavirus vaccines have not been tested on pregnant women, the advice from the government is that until more information is available, people who are pregnant should not routinely have the vaccine.
Non-clinical evidence is required before any clinical studies in pregnancy can start, and before that, it is usual to not recommend routine vaccination during pregnancy.
Evidence from non-clinical studies of the Pfizer/BioNTech vaccine has been received and reviewed by the Medicines and Healthcare products Regulatory Agency (MHRA).
This evidence was also reviewed by the World Health Organisation and regulatory bodies in the United States, Canada and Europe and raised no concerns about safety in pregnancy.
Non-clinical studies of the Oxford/AstraZeneca vaccine have raised no concerns.
The Joint Committee on Vaccination and Immunisation has recognised that the potential benefits of vaccination are particularly important for some pregnant women.
This includes those who are at very high risk of catching coronavirus or those with clinical conditions that put them at high risk of serious complications from Covid-19.
The government advises women in those circumstances to "discuss vaccination with your doctor or nurse, and you may feel that it is better to go ahead and receive the protection from the vaccine."
There are currently three vaccines approved for use in the UK - the Pfizer/BioNTech jab, the Oxford/AstraZeneca vaccine and the Moderna one.
