Hematologist
CION Cancer Clinics
Living without a spleen: your infection risk and how to manage it | CION Cancer Clinics
Yes, life after splenectomy carries a lifelong higher risk of serious infection. It is uncommon, but when it happens it can become dangerous within hours. Most people still live ordinary lives. Protection rests on three things: complete vaccines, a card saying you have no spleen, and treating any fever as an emergency. This page explains which germs matter, who is most at risk, and what to ask your haematologist. At CION Cancer Clinics, our haematologist reviews abnormal blood reports with you, orders only the tests that answer your question and explains each result plainly.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Does living without a spleen really raise your infection risk?
- Which infections are you actually protecting against?
- Who carries more risk, and does it ever go away?
- What does a safe everyday routine look like?
- What do families get wrong about life without a spleen?
- What can this page not tell you about your own risk?
- Common questions about life after splenectomy
The short answer
Does living without a spleen really raise your infection risk?
Yes. Without a spleen, a small number of germs can cause a serious infection much faster than they would in someone who still has one. The risk stays for life, but vaccines, a clear fever plan and quick action keep it low for most people.
What the spleen was doing for you
The spleen sits under your left ribs. It filters your blood and catches germs that are wrapped in a slippery outer coat, which other parts of the immune system find hard to grip. It also helps make the antibodies that stick to those germs. When the spleen is removed, or stops working, the blood loses that filter.
Why the risk is described as rare but serious
Most people who have had a splenectomy (surgery to remove the spleen) live ordinary lives. Serious infections are uncommon. The reason doctors take them so seriously is speed. When one does happen, a person can go from feeling slightly unwell to being very ill within hours. Doctors call this overwhelming post-splenectomy infection, often shortened to OPSI on reports.
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A fever cannot wait
If you have no spleen and develop a fever, shivering, a sudden rash, or you simply feel very unwell very quickly, go to the nearest emergency department the same day, or call 108. Tell them straight away that you have no spleen. Do not wait until morning to see if it settles, and do not treat the fever at home with paracetamol alone.
Not sure whether this applies to you?
Ask an oncologistWhat the risk is about
Which infections are you actually protecting against?
The extra risk is not from every cold or cough. It comes mainly from a few germs, and most of them can be vaccinated against.
Pneumococcus
The germ behind most serious infections after splenectomy. It can cause pneumonia, meningitis and blood poisoning. Pneumococcal vaccines are the centre of your protection plan.
Meningococcus
A cause of meningitis and a fast-spreading blood infection, sometimes with a rash that does not fade when pressed. There are separate vaccines for different strains, and you usually need more than one.
Haemophilus influenzae type b
Written as Hib on your vaccine card. Despite the name, it is a bacterium and not the flu virus. Most adults need a single catch-up dose if they were not vaccinated as children.
Other risks worth knowing
Some infections are not covered by any vaccine, so avoidance and early treatment matter more.
Tell your doctor about
- Any dog or cat bite, even a small one
- Travel to a malaria area
- Tick bites after farm or forest visits
- Influenza, which opens the door to pneumonia
Your own risk
Who carries more risk, and does it ever go away?
The risk never fully goes away, so the precautions are for life. It is not the same for everyone, though, and your haematologist will judge where you sit.
When the risk tends to be higher
The first few years after surgery are usually the period of greatest risk. Young children are more vulnerable than adults. So are people whose spleen was removed because of a blood cancer such as lymphoma, or who are having chemotherapy, steroids or other treatment that lowers immunity. People with thalassaemia or sickle cell disease also need extra care.
When the risk tends to be lower
A healthy adult whose spleen was removed after an accident, and who is fully vaccinated, is generally at the lower end. Lower is not zero. The fever rule applies to everyone.
What changes the plan
Your doctor may suggest daily antibiotics for a period, or a supply to keep at home with written instructions. Do not start, stop or change these on your own. Ask for the plan in writing.
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Living with it
What does a safe everyday routine look like?
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Keep your vaccines up to date
Ask for a written vaccine record and keep a photo of it on your phone. Get the flu vaccine every year, and ask your doctor when any pneumococcal or meningococcal booster is due.
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Carry proof that you have no spleen
A card in your wallet, a note on your phone lock screen or a medical bracelet. If you collapse or cannot speak, it tells the emergency team what to look for first.
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Tell every doctor and dentist
Write it on every form, even at a small clinic. It changes how quickly they treat a fever.
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Know your nearest emergency department
Save its address and the 108 number. If you live far from a large hospital, agree a night-time fever plan with your family now.
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Plan ahead before travel
See your doctor before a trip, especially to a malaria area. Pack your antibiotic supply if you have one, your vaccine record and your card.
Commonly believed
What do families get wrong about life without a spleen?
"The liver takes over, so there is nothing to worry about."
The liver and other organs do some of the filtering, but not all of it. The gap is exactly for the coated germs that cause the most dangerous infections. That is why the precautions last for life.
"He had his vaccines once, so he is fully protected."
Vaccines lower the risk a great deal, but they do not cover every strain or every germ. Some need boosters, and flu needs a new dose each year. A fever still needs same-day attention.
"She should stay at home and avoid people."
There is no need to stop working, studying or meeting family. What matters is vaccines, hand washing, and never ignoring a fever or a bite.
"It is just a fever. We will see the doctor in the morning."
This is the most dangerous belief on this page. Without a spleen, a serious infection can move faster than an overnight wait. Going to the emergency department and being sent home is far better than waiting too long.
Being straight with you
What can this page not tell you about your own risk?
This page cannot tell you how likely an infection is for you, or whether you need daily antibiotics. Those depend on why the spleen was removed, your age, your vaccines so far and any treatment that lowers your immunity.
Why the reason for surgery matters
A spleen removed after a road accident, a spleen removed for a low platelet count, and a spleen removed during lymphoma treatment lead to quite different plans. If you do not know why yours was removed, ask for the discharge summary. It is one of the most useful papers you can keep.
What to bring to your haematologist
Bring the discharge summary, any vaccine records, a list of every medicine you take and your recent blood reports. At CION, Dr. Basudev Pokhrel and the haematology team review the whole picture, check which vaccines are missing, and coordinate with your surgeon or physician. Ask directly: which vaccines am I still missing, do I need antibiotics at home, and what should my family do if I get a fever at night?
Questions we are asked
Common questions about life after splenectomy
Can I live a normal life without a spleen?
Yes. Most people work, travel, exercise, marry and have children after a splenectomy. The difference is a small set of lifelong habits: keeping vaccines up to date, carrying a card that says you have no spleen, and treating any fever as urgent. With those in place, day-to-day life looks much like anyone else's.
How long does the infection risk last?
For life. It is usually highest in the first few years after surgery and in young children, but it never disappears completely, even many years later. That is why the fever rule does not have an expiry date. Your haematologist can tell you whether your own risk is higher or lower than average.
Should I go to hospital for every small fever?
Yes, you should be seen the same day, even if it seems small. A fever with shivering, rash, confusion or vomiting needs the emergency department at once. If your team has given you antibiotics to keep at home, follow their written instructions, and still get checked in person. Mention that you have no spleen when you arrive.
Do I need antibiotics every day for life?
Not always. Some people are advised to take them daily for a period, some for longer, and some are given a supply to keep at home instead. It depends on age, the reason for surgery and other health problems. Your treating team decides, and you should not start or stop them on your own.
Is it safe to travel after splenectomy?
Usually, with planning. See your doctor before you go. Malaria can be much more severe without a spleen, so ask about protection before any trip to an area where it is common, including parts of India. Carry your vaccine record, your card and any antibiotics prescribed, and know where the nearest hospital is.
My child had the spleen removed. What is different for children?
Children are more vulnerable than adults, so the plan is often stricter. They may be advised to take antibiotics for longer, and their routine childhood vaccines must be complete. Tell the school, and make sure every adult caring for the child knows that a fever means going to hospital the same day.
What should I do after a dog or animal bite?
Go to a doctor the same day, even for a small bite or scratch. Some germs carried in the mouths of dogs and cats can cause a fast, severe infection in people without a spleen. Tell the doctor about your splenectomy, and ask about rabies protection as well, which is needed after most animal bites in India.
Can the spleen grow back?
Sometimes small pieces of spleen tissue remain, or extra little spleens were present from birth, and these can grow. They may do part of the job, but you cannot rely on them for protection. Keep following every precaution unless your haematologist tells you clearly that your plan has changed.
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Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- NHS — Spleen problems and spleen removal
- UK Health Security Agency — Immunisation of individuals with underlying medical conditions: the Green Book, chapter 7
- National Cancer Institute — Definition of splenectomy
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Vaccines and Antibiotics After SplenectomyWhich vaccines you need, and whenLiving With an Enlarged Spleen: Injury RiskPrecautions if your spleen is still in place but enlargedEnlarged Spleen: Benign CausesWhy a spleen grows, and what is not cancerSpleen, Nodes and Benign EnlargementEvery guide in this section
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