Are cats and litter trays safe during pregnancy?

The verdict

Keep your cat. The single most useful sentence on this subject comes from the NHS and it is unequivocal: you cannot catch toxoplasmosis from stroking a cat, having a cat as a pet, or from coming into contact with someone who has got it.

Rehoming a cat because of pregnancy is a decision made on bad information, and it is made often. The exposure route is cat faeces, not cat fur, cat saliva or cat company.

What does need to change is who deals with the litter tray, and how. The NHS advises avoiding cat poo in cat litter and soil if you can, wearing gloves if you need to empty litter trays, and washing your hands afterwards. The CDC's advice for pregnant people is more direct: if possible, have someone else change the cat litter, and if no one else can, wear disposable gloves and wash your hands with soap and water afterwards.

What toxoplasmosis actually is

Toxoplasma gondii is a parasite. The NHS describes toxoplasmosis as a common infection you can catch from the poo of infected cats or from infected meat, usually harmless, and states that most people who have had it never knew. Some get flu-like symptoms: a high temperature, headache, sore throat, aching body, swollen glands and tiredness.

The reason it matters in pregnancy is what happens if you catch it for the first time while pregnant. The NHS states that toxoplasmosis in pregnancy can cause miscarriage, and that if it spreads to your baby it can cause serious complications. The CDC adds the longer view: most infected infants have no symptoms at birth but can develop serious problems later in life, such as blindness or intellectual disability, and occasionally there is serious eye or brain damage at birth.

Two pieces of context make this less frightening than it sounds. First, it is a first-infection problem. If you had toxoplasmosis before this pregnancy, you are not at risk in it. Second, the NHS notes that referral for testing to see whether a baby has been infected is very rare, which reflects how uncommon the whole sequence is.

The one to five day window

The mechanism explains the advice better than the advice explains itself. The CDC states that the Toxoplasma parasite does not become infectious until one to five days after a cat sheds it in its faeces, and that by cleaning the litter box every day you remove the faeces before they become infectious.

That single fact reframes the whole question. Fresh cat faeces are not the hazard; aged cat faeces are. This is why a tray emptied daily by someone else is low risk, why a tray left for a week is the worst case, and why the outdoor soil in a garden used by neighbourhood cats can be a bigger exposure than your own well-managed indoor tray.

What to actually do

The NHS and CDC advice, combined:

• Hand the tray over. Someone else in the household should do it for the duration of the pregnancy. This is the primary recommendation in both countries.
• If nobody else can, wear disposable gloves and wash your hands with soap and water afterwards, every time.
• Empty it daily rather than letting it accumulate, because of the one to five day window.
• Wear gloves for gardening and wash your hands thoroughly afterwards, because garden soil and sandpits are the other route.
• Feed your cat commercial food. Both bodies say not to feed cats raw or undercooked meat, which is how cats become infected in the first place.
• Keep cats indoors if you can, the CDC adds, to stop them hunting and picking up the parasite.
• Do not take on a new cat while pregnant, and do not handle stray cats or kittens, which is CDC advice with no NHS equivalent.

The route most people forget

Cats get the blame, but food is at least as important. The NHS lists, in the same prevention block: do not eat raw or undercooked meat or cured meats such as salami or parma ham; do not have unpasteurised goats' milk or products made from it; thoroughly cook meat, especially lamb, pork and venison; wash hands, knives and chopping boards after preparing raw meat; and wash fruit and vegetables thoroughly to remove traces of soil.

The CDC's version gives temperatures: whole cuts of meat other than poultry to at least 63C with a three-minute rest, ground meat to 71C, and all poultry to 74C. It also advises against raw or undercooked oysters, mussels and clams, because Toxoplasma can wash into seawater.

One more from the NHS, which surprises people who do not live near livestock: do not touch pregnant sheep or lambs.

If you think you have been exposed

Emptying one tray without gloves is not an emergency and there is no routine test offered on that basis. Wash your hands and change the arrangement going forward.

Symptoms are what trigger action. The NHS advises asking for an urgent GP appointment or contacting NHS 111 if you are pregnant and have any symptoms of toxoplasmosis, and you can call your midwife too. A GP can do blood tests to see whether you have been infected and can prescribe medicines including antibiotics if needed; if you test positive in pregnancy you can be referred for further tests to see whether your baby has been affected.

Note that routine antenatal screening for toxoplasmosis is not offered in the UK. Testing follows symptoms or a specific concern rather than being part of the standard schedule.

Where guidance genuinely differs

The UK says avoid the tray; the US says clean it daily. The NHS frames its advice as avoidance with gloves as a fallback. The CDC gives the same first preference, someone else doing it, but pairs it with an operational instruction the NHS does not publish: change the cat litter box daily, with the one to five day sporulation window given as the reason. The US advice is the more useful of the two because it explains the timing.

Only the CDC addresses acquiring cats. Do not adopt or handle stray cats, especially kittens, and do not get a new cat while you are pregnant, is CDC advice with no NHS counterpart. It is aimed at the same thing: a cat with an unknown infection history is more likely to be actively shedding than a settled indoor pet.

Neither country screens. Some European countries have historically offered routine antenatal toxoplasmosis screening; the UK and US do not, and both handle the question through prevention advice and symptom-triggered testing instead.