Amit Kumar Amit Kumar Asked 10 months ago

How long after shots does fever last?

My 4-month-old just got his vaccinations yesterday, and he has a slight fever since morning. The doctor said it's normal, but I'm worried. How long does this post-vaccination fever usually last for babies?

7

7 answers

Amit Deshmukh Amit Deshmukh Joined Jul 2026 4 months ago
Most liked

Usually, vaccine fever lasts about 24 to 48 hours max. If it is a mild fever, just take rest and keep working from home if possible. If it doesn't go away by the third day, don't ignore it, just consult your doctor.

Ramu Yadav Ramu Yadav Joined Feb 2026 9 months ago

Bhai, fever after injections is normal, it means the medicine is working. It generally goes away in 1 or 2 days. Keep a wet cloth on the forehead if it feels hot, and give your body plenty of rest.

Anjali Nair Anjali Nair Joined May 2026 5 months ago

My hand is quite painful and I have a mild fever after my shot yesterday. Is it normal for it to stay for more than two days, or should I go back to the clinic? I am a bit scared about this.

Powered by

Consult a internal medicine specialist

Simran Kaur Simran Kaur Joined Jun 2026 4 months ago

My child had a high fever after their basic shots, and it lasted for about two days. The doctor told us to give prescribed paracetamol drops and do cold sponging. Keep them hydrated with coconut water or breast milk if they are small.

Siddharth Mehta Siddharth Mehta Joined Jan 2026 10 months ago

When I got my booster shot, my doctor clearly told me that a low-grade fever is a standard immune response. It typically peaks around 24 hours and resolves by 48 hours. He advised taking paracetamol only if the temperature goes above 100 degrees.

Related reads

All articles
Rukmini Iyer Rukmini Iyer Joined Jun 2026 4 months ago

Fever after shots should not last more than 1 to 2 days. Keep your meals very light, like simple khichdi or moong dal soup, to avoid putting pressure on your digestive system. Drink plenty of warm water to flush out toxins.

Meera Sen Meera Sen Joined Jun 2026 4 months ago

I totally get it, dealing with fever and body pain after shots is so exhausting. It usually goes away within 48 hours, so try to rest as much as you can. Hang in there, your body is just building its strength.

Evidence-based health, reviewed by clinicians. Free, weekly.