Why nobody screened you, and why you might still know

Public Health England announced on 27 January 2016 that rubella susceptibility screening in pregnancy would end in England on 1 April 2016. The announcement set out four reasons, following UK National Screening Committee reviews in 2003 and 2012: rubella infection levels in the UK "are so low they are defined as eliminated by the World Health Organization"; rubella infection in pregnancy "is very rare"; being fully immunised with MMR before becoming pregnant "is more effective in protecting women against rubella in pregnancy"; and "the screening test used can potentially give inaccurate results and cause unnecessary stress among women".

PHE also made the blunt point that "screening for rubella in pregnancy does not give any protection to the unborn baby in that pregnancy". Knowing your status mid-pregnancy does not let anyone vaccinate you during it.

So most people in England are no longer told anything about their rubella status in pregnancy. If you do know you are not immune, it is usually because you were tested before 2016, tested for another reason, tested in another country, or because your maternity records note an uncertain MMR history.

What the risk actually is

Two things are true at once and both belong in the same paragraph.

First, rubella infection in early pregnancy is genuinely dangerous. WHO states that when a woman is infected with rubella virus early in pregnancy "she has a 90% chance of passing the virus on to her fetus", and that this "can result in miscarriage, fetal death, stillbirth, or infants with congenital malformations, known as congenital rubella syndrome". Children with congenital rubella syndrome can have hearing impairment, eye and congenital heart defects and developmental delay. WHO notes the most severe damage occurs early in pregnancy, especially in the first trimester.

Second, the chance of encountering rubella in the UK is now very low. WHO reports that before vaccine introduction, "up to 4 babies in every 1000 live births were born with CRS", and that reported rubella cases fell 97%, from 670,894 in 102 countries in 2000 to 17,865 in 78 countries in 2022. Rubella remains a live risk in countries with lower vaccination coverage, which is why travel is the part of the conversation that still matters.

Neither of those statements cancels the other. Being non-immune in the UK is a low-probability, high-consequence situation, and the sensible response is planning rather than fear.

You cannot have MMR while pregnant

MMR is a live attenuated vaccine and is not given during pregnancy. That is the reason knowing your status mid-pregnancy changes so little.

The vaccine is given after birth instead, and it is safe while breastfeeding. UKHSA's guidance on rash in pregnancy asks maternity teams to "check and document measles, mumps and rubella (MMR) vaccination status in the maternity records and offer postpartum doses to those with no, incomplete or uncertain vaccination history". If you are non-immune, ask for this to be written into your postnatal plan before you give birth, because it is one of the easiest things to lose in the first weeks with a baby.

Advice on avoiding pregnancy for a period after MMR exists and is expressed as a precaution rather than as evidence of harm; the interval quoted varies between national bodies, so take the number from whoever gives you the vaccine rather than from a page.

What to do if you are exposed or develop a rash

UKHSA's quick reference guidance for health professionals on rash in pregnancy sets out what should happen, and knowing it helps you ask for the right thing.

If you develop a rash at any point in pregnancy, inform your midwife, GP or obstetrician urgently, and "avoid any antenatal clinic or maternity setting until clinically assessed, to avoid exposing other pregnant women".
If you have contact with someone who has a rash, report it. UKHSA defines contact for these purposes as "face-to-face contact or being in the same room (for example, house, classroom or 2 to 4 bed hospital bay) for a significant period (15 minutes or more)".
Where rubella or measles is suspected, the local health protection team should be notified urgently, and testing arranged in discussion with a microbiologist or virologist.

What gets tested depends on the date of onset, the type and distribution of the rash, your gestation, travel history and past vaccination or antibody results, which is why the date you first noticed something matters and is worth writing down.

Rubella is not the only rash that matters

UKHSA's viral rash in pregnancy guidance covers parvovirus B19, measles, rubella and chickenpox together, because those are the rash illnesses "where intervention can prevent or reduce the potential for adverse outcomes". If you are worried about a rash contact, the useful thing to report is the contact and the circumstances, not your guess at which virus it was. Several of these look similar and none of them is reliably distinguishable by description.

If your MMR history is simply unknown

This is the most common situation, and it is not the same as being non-immune. Many people have no records from childhood. Testing in pregnancy will not change your management, because vaccination cannot happen until afterwards. The practical answer is the same either way: report rash contacts, and get vaccinated after birth.

Two doses of MMR is the standard schedule, so if you had one dose or are unsure, the postnatal conversation should cover whether you need one or two. The NHS pages on rubella describe the infection and its symptoms, and the Green Book rubella chapter is the underlying UK immunisation guidance behind all of this.

Before a future pregnancy

If you know you are non-immune, MMR before conceiving again removes this whole question. It is available on the NHS to adults who need it, is not restricted to childhood, and is the one action that converts a recurring worry into a closed issue.

Not Immune to Rubella