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abigail_day2026-04-17

I just gave my 6-month-old the Infanrix Inj, 0.5ml vaccine to protect against diphtheria, tetanus, and pertussis. The nurse said it's normal for there to be some side effects, but I'm not sure what to expect. Has anyone else given this vaccine to their child recently? What were the side effects like? Anything I should be extra vigilant about? It seems like most side effects are mild, but I want to be prepared just in case. Thanks, reddit!

1 min read
last active 4/17/2026
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Comments (5)

J
jonathan_hamilton4/14/2026

My kid had a mild fever and was fussy for a day or so after this vaccine, but nothing too bad.

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linda_fernandez4/14/2026

My daughter had a bit of a fever and she was really fussy, but she was back to her normal self the next day

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william_owens4/14/2026

My kid had very minimal side effects and slept through the night. Every kid is different, so try not to worry too much. You got this, mom!

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elena_vargas4/14/2026

I thought my kid was going to have a seizure. I panicked and called the dr. and they were very reassuring and so helpful. No seizure, just a heavy sleeper

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james_bradley4/14/2026

Try to keep your kid hydrated and comfortable. It can be a tough day, but it's usually short-lived. Keep an eye out for anything concerning, but dont expect the worst and dont worry