Q: Can my child catch Influenza A again if they already had it last month? The daycare is currently having an outbreak.
- Myeongchan Kim, MD
- Jul 2
- 2 min read
Updated: Jul 8
Medically reviewed by Sang Hyun Ahn, MD
Content edited by Myeongchan Kim, MD
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question:
My child caught Influenza A last month before the current major outbreak. Right now, Influenza A is spreading at our daycare, so I have been keeping my child at home all week. They currently have a cold with a severe cough. Should I continue keeping them at home next week, or is it safe to send them back since they already had Influenza A last month? I thought they wouldn't catch it again since it's the same Type A, but are there different strains? Is reinfection with Influenza A possible during the same flu season?
Answer:
It is completely understandable that you are worried about the possibility of an influenza reinfection, especially with the virus currently circulating at your child's daycare.
Can a child catch Influenza A again?
Yes, unfortunately, it is possible to catch Influenza A again during the same flu season.
Influenza A has multiple subtypes (such as H1N1 and H3N2).
The subtype currently circulating could be different from the one your child contracted last month.
Being infected with one subtype does not provide immunity against the other subtypes, making reinfection possible.
Guidelines for returning to daycare:
Since your child is currently experiencing a severe cough, it is recommended to keep them at home for an additional 3 to 4 days, even if they do not currently have a fever. You should wait to send them back to daycare until their cough has significantly improved and their overall condition has fully recovered. If they are old enough, wearing a mask at daycare is also highly recommended.
Prevention strategies against reinfection:
Practice frequent handwashing, especially immediately after returning home from daycare.
Ensure their seasonal flu vaccination is up to date for this year.
Provide plenty of rest, adequate sleep, and nutritious meals to support their immune system.
Continue monitoring the outbreak situation at the daycare facility.
Because your child's immune system may still be slightly weakened from last month's influenza infection, it is safest to prioritize a full recovery before they return to group settings. Keep them at home until their cough subsides and their energy returns. If their coughing symptoms persist or worsen, please consult your pediatrician for an in-person medical evaluation.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
