Hematologist
CION Cancer Clinics
Infection risk during AML induction | CION Cancer Clinics
Infection risk during AML induction is high, and it is the most common serious problem in the first weeks. Chemotherapy empties the marrow, so the white cells that fight bacteria and fungi almost disappear for a while. Any fever or shivering needs the nurse at once, or the emergency department and 108 if at home. This page explains when the risk peaks, what protects the patient, and what the team does. At CION Cancer Clinics, every leukaemia, MDS and MPN case is reviewed by our haematologist and discussed at a tumour board before a plan is agreed.
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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
- How high is the infection risk during AML induction?
- When is the infection risk highest?
- What actually protects the patient from infection?
- Which changes should you report straight away?
- What do families often believe about infection risk?
- What does the medical team do to prevent and treat infection?
- Common questions about infection during AML induction
!
Fever during AML treatment cannot wait
Any fever, shivering, sudden weakness, fast breathing or feeling cold and clammy during or after AML treatment needs urgent care. In hospital, tell the nurse at once. At home, go to the nearest emergency department now or call 108, and say the patient has leukaemia and low counts. Do not give a fever tablet first to see if it settles. It hides the fever without treating the infection.
The short answer
How high is the infection risk during AML induction?
Infection risk during AML induction is high, and it is the most common serious problem in the first weeks. Chemotherapy clears the leukaemia by emptying the marrow, so for a while the body has almost no neutrophils, the white cells that fight bacteria and fungi.
Why the risk is so much higher than with other cancers
AML itself already crowds out healthy white cells before treatment starts. Induction chemotherapy then pushes counts lower still, and they usually stay low for weeks rather than days. The lining of the mouth and gut is also damaged, which lets germs that normally live there slip into the blood.
Where most infections come from
Surprisingly, most infections do not come from visitors or the hospital air. They come from bacteria and fungi already living on the patient's own skin, mouth and gut. That is why hygiene, mouth care and line care matter as much as masks.
Why a mild fever is treated as serious
With so few white cells, the body cannot produce the usual signs of infection such as pus or swelling. A fever may be the only sign, and an infection can become sepsis, a life-threatening reaction, within hours. That is why the team starts antibiotics fast, often before test results are back.
Every patient's risk is different. Your team will explain what applies on your ward.Who this page is for
This page is about intensive induction chemotherapy given in hospital. Gentler treatments given as day-care also lower counts, but the pattern and timing differ. If your family member is on a day-care plan, ask the team which of these precautions apply at home.
Not sure whether this applies to you?
Ask an oncologistAcross induction
When is the infection risk highest?
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Before chemotherapy starts
AML has already lowered healthy white cells. Some people arrive with an infection, which the team treats before or alongside starting chemotherapy.
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The chemotherapy days
Counts are still falling. Mouth care and line care start now, not later, because habits set in this week protect the weeks ahead.
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The low point
After the drugs finish, counts reach their lowest and stay there for a stretch. This is the most dangerous period for bacterial and fungal infections.
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Recovery
As the marrow recovers, neutrophils rise again and the risk falls. The team checks counts daily to judge when it is safer to go home.
Lowering the risk
What actually protects the patient from infection?
Small things done every day matter more than any single rule.
Hand washing
Everyone washes or sanitises hands before touching the patient, the bed, food or the line. This is the single most useful habit on the ward.
Mouth care
Gentle cleaning with a soft brush and the mouthwash the team gives, several times a day. Sores in the mouth are an entry point for germs.
Tell the nurse about any new mouth pain or white patches.The central line
Only nurses touch the line and dressing. Keep it dry and covered.
Report at once
- Redness, pain or pus at the site
- Shivering when a drip is flushed
Food safety
Freshly cooked, well heated food in clean covered containers. Avoid raw salads, cut fruit from stalls, unpasteurised milk and leftovers.
Visitors and the attendant
Few visitors. Nobody with a cough, cold, fever, loose motions or chickenpox contact enters the room. Flowers and plants usually stay out.
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Watch for
Which changes should you report straight away?
- Fever, shivering or feeling cold and clammy
- New cough, fast breathing or chest pain
- Loose motions or pain in the belly
- Burning when passing urine
- Redness or pain around the line or back passage
- Confusion, drowsiness or a sudden change in behaviour
Commonly believed
What do families often believe about infection risk?
"A mask on the patient is enough protection."
Masks help, but most infections come from the patient's own gut, mouth and skin. Hand washing, mouth care and line care do more of the work than masks alone.
"The fever is small, so let us watch it till morning."
With very low white cells, a small fever can be the only sign of a serious blood infection. Tell the nurse or go to hospital at once. Waiting a few hours can make a large difference.
"Antibiotics were started, so the cultures must have found something."
Not necessarily. Antibiotics are started quickly on suspicion, before culture results arrive, because waiting is riskier. Many fevers never show a germ on testing, and treatment is still right.
"Home remedies will build up immunity faster."
Herbal mixtures, raw preparations and supplements can carry germs or interact with treatment. Nothing speeds marrow recovery at home. Ask the team before giving the patient anything new.
In hospital
What does the medical team do to prevent and treat infection?
The team watches for infection every day and acts quickly when it appears. Most patients will have at least one fever during induction, and the plan for it is ready before it happens.
Preventive medicines
Many patients are given medicines to prevent fungal, viral or bacterial infections while counts are low. Which ones, and for how long, depends on the treatment and local germs. Do not start, stop or skip any of them on your own.
When a fever appears
Blood cultures are taken from the line and a vein, sometimes with a chest scan, and strong antibiotics start through the drip within a short time. If fever continues, the team may add antifungal medicine or change antibiotics based on results.
Who needs even more care
Older patients, people with diabetes, lung or kidney disease, and those who arrived with an infection carry extra risk. Tell the team about every long-term illness at admission.
What this page cannot tell you
It cannot tell you how likely your family member is to get a serious infection. That depends on the chemotherapy, the patient's health and how long counts stay low. Ask the haematologist on the daily round.
Questions we are asked
Common questions about infection during AML induction
Why can't we just give paracetamol for the fever?
Paracetamol lowers the temperature but does nothing to the infection underneath. It can hide the one warning sign the team relies on. In hospital, only give medicine the nurse gives. At home, go to hospital first and let the team decide what to give.
Does the patient need a single room?
Many haematology wards use single or filtered rooms during induction, but hygiene habits protect the patient more than the room itself. If a single room is not available, careful hand washing, few visitors and clean food still lower the risk a great deal. Ask what your ward advises.
Can children visit their parent in hospital?
Young children often carry colds and stomach bugs without looking ill, so many wards limit child visits while counts are low. Video calls help. Ask the nurse whether a short, planned visit is possible once counts begin to recover, and keep any child with symptoms at home.
What is a fungal infection and why do they worry about it?
Fungi such as moulds live in dust, soil and building work. When white cells stay low for a long time, fungi can infect the lungs or sinuses. That is why some patients get antifungal medicines, a chest scan when a fever lasts, and advice to avoid dusty or damp places.
Is it safe for the patient to eat fruit?
Fruit with a thick peel, such as banana or orange, washed and peeled freshly at the bedside, is usually allowed. Cut fruit from outside, berries and raw salads are often avoided while counts are low. Wards differ, so follow the food list your own team gives.
Can a growth factor injection raise the white count faster?
Some teams use growth factor injections in certain situations, and many do not use them routinely in AML. It is a medical decision based on the treatment plan. Ask the haematologist whether it is suitable, but do not arrange or buy one elsewhere.
How will we know the risk has come down?
Daily blood counts show neutrophils rising as the marrow recovers. The team uses that, together with how the patient is feeling, to decide when it is safe to ease precautions or go home. Ask them to show you the trend rather than a single day's number.
Should the attendant take any vaccine?
Family members being up to date with routine vaccines, including a yearly flu vaccine, helps protect the patient. Some live vaccines need care around a person with low counts. Ask the team before any family member gets a vaccine, and never give one to the patient without their advice.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
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
- National Cancer Institute — Side Effects of Cancer Treatment
- American Cancer Society — Acute Myeloid Leukemia (AML)
- Macmillan Cancer Support — Acute myeloid leukaemia (AML)
- National Health Mission — National Health Mission
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
Induction Chemotherapy for AML: The First 30 DaysThe whole first course, step by stepThe First Week in Hospital With AML: A Family GuidePractical jobs for the family on the wardGoing Home Between AML CyclesKeeping infection risk low at homeBlood counts during chemotherapyHow to read the daily count report
Talk to us
Worried about infection during treatment?
If there is a fever, go to the nearest emergency department first. For questions about the plan, share the reports with CION's haematology team. One helpline serves every CION centre.