Q: Are my children no longer contagious from the flu if their temperature has been normal for 24 hours?
- Myeongchan Kim
- May 18
- 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 first child showed flu symptoms (fever, chills, runny nose, cough) on Sunday morning, and my second child developed symptoms early Monday morning. We visited the clinic on Monday. The first child tested positive for the flu, so the doctor prescribed Tamiflu for both children for 5 days without needing to test the second child.
The doctor mentioned that they should feel better in about 3 days and would no longer be contagious 24 hours after their body temperatures returned to normal. We didn't use any additional fever reducers besides the prescribed medication. Yesterday evening, their temperature was 36.8°C, and this morning it was 37.1°C. Is it safe to assume they are no longer contagious at this point?
Answer:
It must have been very difficult caring for two sick children at the same time, but I am glad to hear they are recovering well!
Regarding your question about contagiousness, the temperatures you mentioned (36.8°C yesterday and 37.1°C today) are well within the normal range. As your doctor correctly advised, the risk of transmitting the flu significantly decreases once a normal body temperature is maintained for 24 hours without the use of fever-reducing medications.
Given their current situation:
• The 5-day Tamiflu course is completed.
• A normal temperature has been maintained for over 24 hours.
• It has been several days since the onset of symptoms.
Therefore, the risk of contagion appears to be very low.
Additional Precautions:
• If mild symptoms like coughing or a runny nose linger, it is advisable for them to wear a mask.
• Continue to encourage frequent handwashing, especially after blowing their nose or coughing.
• It is generally recommended to wait at least 48 hours after the fever breaks before returning to school or daycare (please check your specific school's policy as well).
• Exercise a bit more caution if there are high-risk individuals (infants, pregnant women, or the elderly) in the household.
When to Seek Re-evaluation:
Please consult your pediatrician again if you observe any of the following symptoms:
• The fever returns.
• They experience difficulty breathing or chest pain.
• They show signs of severe lethargy or excessive weakness.
Make sure your children continue to get plenty of rest and stay well-hydrated to support their full recovery.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
