Christianity
Christian denominations, including the Roman Catholic Church, Church of England, Methodist Church, Baptist Union and Orthodox Churches, support vaccination as a means of protecting both individuals and communities.
Many Christian leaders frame vaccination as an expression of loving one's neighbour and caring for vulnerable people. The Vatican has repeatedly stated that vaccination can be a morally responsible act when intended to protect health. Some small groups that emphasise faith healing may oppose medical interventions, but these are not representative in more mainstream Christianity.
Further reading:
Church of England: Vaccines and faith
History of Vaccines: Christianity and Vaccination
Hinduism
There is no religious prohibition against vaccination in Hinduism. Hindu teachings place significant emphasis on preserving life, preventing suffering and promoting wellbeing.
Many Hindu leaders view vaccination as compatible with these values and as a responsible public health measure. Although some individuals may have personal concerns about ingredients or medical interventions, mainstream Hindu organisations have supported vaccination campaigns and encouraged followers to seek trustworthy medical advice. Vaccination is generally regarded as consistent with the principle of ahimsa (avoiding harm).
Islam
Islamic scholars and major Muslim organisations worldwide support vaccination, including flu vaccination. The preservation of life (hifz al-nafs) is one of the fundamental objectives of Islamic law.
Concerns have occasionally arisen regarding vaccine ingredients, but many Islamic councils have ruled that vaccines are permissible (halal), particularly when they protect health and prevent serious illness. Organisations such as the British Islamic Medical Association and the International Islamic Fiqh Academy have actively promoted vaccination. The overwhelming consensus among mainstream scholars is that flu vaccination is acceptable and often encouraged.
Further reading:
British Islamic Medical Association
Muslim Council of Britain’s position of flu vaccines
Muslim Council of Britain’s Operation Vaccination Campaign
Judaism
Judaism is a strong proponent of vaccination. Across Orthodox, Conservative and Reform traditions, most rabbis regard vaccination as consistent with the Jewish obligation to preserve life (pikuach nefesh). Preventing illness and protecting the wider community are considered religious responsibilities. Major rabbinical organisations have consistently endorsed vaccination programmes, and Jewish law generally supports taking preventive measures against disease. While individual opinions differ, mainstream Jewish authorities overwhelmingly encourage vaccination, including annual flu vaccination for eligible groups.
Further reading:
What does Jewish Law say about vaccination
Does halakhah require vaccination? A discussion
Sikhism
The Sikh Council UK, the largest representative body for Sikhs in the UK, actively engaged with vaccine promotion by organising national vaccine information webinars and encouraging community discussion around vaccination. This demonstrates that vaccination is considered compatible with Sikh values, particularly the principle of sarbat da bhala (welfare of all).