Q: Do my two children need to be isolated from each other if they both tested positive for Influenza A a few days apart?
- Myeongchan Kim, MD

- Jul 28
- 2 min read
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 second child was diagnosed with Influenza A last Thursday. My first child started having a fever on Saturday and was officially diagnosed with Influenza A today. Since they both have the exact same flu, do I still need to keep them isolated from each other?
Answer:
You are asking about isolation protocols for siblings who have both been diagnosed with Influenza A. Since both children are infected with the same Influenza A strain, they do not need to be isolated from each other.
Here is a summary of your current situation:
• Second child: Diagnosed last Thursday (currently on day 5)
• First child: Diagnosed today (symptoms started on Saturday)
→ Since both have Influenza A, they do not need to be separated.
Isolation Guidelines:
• Between the siblings: They can safely share a room and play together.
• Other family members: Keep the children separated from uninfected family members as much as possible, especially the elderly or pregnant women.
• General outside isolation: Keep them home until 24 hours after their fever has resolved without the use of fever-reducing medication.
• School/Daycare: Generally, they should be isolated from school or daycare until 48 hours after their fever has broken.
Tips for Home Care:
Ensure they get plenty of fluids, such as warm water or electrolyte/sports drinks.
If they were prescribed an antiviral medication (like Tamiflu), make sure they finish the entire course, even if they start feeling better.
Use fever-reducing medications only when the children are uncomfortable.
Ventilate your home frequently and practice strict handwashing.
⚠️ When to revisit a doctor:
Please seek in-person medical evaluation if you notice any of the following:
• A high fever persisting for more than 5 days.
• Difficulty breathing or chest pain.
• Severe headaches or continuous vomiting.
• The children suddenly look or act significantly more ill.
Taking care of two sick children at the same time is definitely exhausting. Typically, the fever from Influenza A subsides within 3 to 5 days, so hang in there just a little bit longer!

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.




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