Vaccination Guidelines for Infants After COVID-19 Diagnosis - Pediatrics

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A six-month-old baby tested positive for COVID-19 the day before receiving vaccinations! Currently, the baby is at home.
How long should we wait before returning to get the originally scheduled vaccinations? The baby had a fever for three days, with a maximum temperature of 40.9 degrees Celsius, but has now completely recovered.
What else should I pay attention to? The baby's activity level is significantly lower than before the illness; could this be due to the prolonged fever? The baby seems to want to sleep a lot.
Thank you in advance for your response.

Xiao Ying, 40~49 year old female. Ask Date: 2022/06/01

Dr. Pei Rensheng reply Pediatrics


Hello: After a confirmed diagnosis, you can receive the vaccine for six-month-olds at least 14 days later, provided there is no fever or discomfort (mild cough and runny nose are acceptable).
If there is decreased activity after the fever subsides, it is likely due to the side effects of antihistamines (used to treat runny nose).
Try stopping this medication first, and if there is still no improvement, consult a physician for further evaluation.
Wishing you safety and health.
Sincerely, Dr.
Pei Ren-Sheng, Attending Physician, Pediatrics, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2022/06/01

More Info


When it comes to vaccination guidelines for infants after a COVID-19 diagnosis, there are several important considerations to keep in mind. Given that your six-month-old baby was diagnosed with COVID-19 just a day before the scheduled vaccination, it's essential to follow the recommended protocols to ensure the safety and health of your child.

Firstly, the Centers for Disease Control and Prevention (CDC) and the American Academy of Pediatrics (AAP) recommend that children who have tested positive for COVID-19 should wait until they have fully recovered before receiving any vaccinations. This typically means waiting until the child has been fever-free for at least 24 hours without the use of fever-reducing medications and has shown improvement in other symptoms. In your case, since your baby had a high fever of 40.9 degrees Celsius for three days and has now completely recovered, it would be prudent to wait at least a week after the resolution of symptoms before rescheduling the vaccination. This allows the immune system to stabilize and ensures that the child is in the best possible health for vaccination.

In terms of monitoring your child's health post-COVID-19, it is not uncommon for infants and young children to exhibit decreased activity levels and increased sleepiness after experiencing a significant illness like COVID-19. The body expends a lot of energy fighting off the virus, and recovery can take time. It is essential to provide a nurturing environment, encourage hydration, and ensure that your child is getting adequate rest. If your baby continues to show signs of lethargy or if there are any concerning symptoms, such as difficulty breathing, persistent high fever, or unusual irritability, it is crucial to consult your pediatrician.

Additionally, after a COVID-19 infection, some children may experience lingering symptoms, often referred to as "long COVID." While this is more commonly discussed in older children and adults, it can also occur in infants. Symptoms may include fatigue, difficulty concentrating (in older children), or other physical complaints. If you notice any persistent symptoms that last beyond a few weeks, it is advisable to seek medical advice.

As for the vaccination itself, it is important to ensure that your child is up to date with their immunizations once they are cleared to receive them. Vaccines are crucial in protecting against various infectious diseases, and delaying them can leave your child vulnerable. Make sure to discuss with your pediatrician the appropriate timing for the vaccinations and any specific vaccines that may be due.

In summary, after a COVID-19 diagnosis, it is recommended to wait at least a week after full recovery before rescheduling vaccinations. Monitor your child's activity levels and overall health, and consult your pediatrician if you have any concerns. Vaccinations are vital for your child's health, and ensuring they are administered at the right time will help protect them from other preventable diseases.

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