Influenza Vaccine Timing and Pediatric Health Concerns - Pediatrics

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Influenza vaccine


Hello Dr.
Zhao: Is the influenza vaccine administered only in October? In the January 30th edition of the China Times, page 39, it mentioned that the influenza vaccine can also be administered now.
Does this mean it is effective against this year's virus or last year's virus? I received the vaccine in mid-October last year; when would be the most appropriate time for me to get vaccinated this year? My child was born in March last year and did not receive the vaccine due to concerns about being too young.
During the Lunar New Year, he got sick, diagnosed with bronchial pneumonia, otitis media, and acute gastroenteritis.
I would like to inquire about the occurrence of otitis media; is it possible that it was present first, or did it arise due to pneumonia? What are the different scenarios that can lead to otitis media?
2.
Regarding the use of antibiotics, if second-generation antibiotics are used, will stronger medications be necessary afterward? I am not very familiar with antibiotics; could you provide a general overview of their usage, advantages and disadvantages, and any precautions that need to be taken?
3.
The outpatient physician has indicated that my child has recovered.
How long after recovery can he receive the influenza vaccine? Thank you for your response.

Ru, 30~39 year old female. Ask Date: 2001/01/31

Dr. Zhao Yongkang reply Pediatrics


Dear Miss,
I apologize for the delay in responding due to having the influenza.
Thank you for your understanding.

1.
After receiving the vaccine last October, you should get the next dose in October of this year, one year later.

2.
Children have shorter and more horizontally positioned Eustachian tubes, which increases the risk of respiratory infections, such as infections of the mouth, throat, and nose, leading to otitis media.

3.
Antibiotics are used based on the specific infection at hand and are not necessarily the same generation as previously used.
The choice of antibiotic depends on the bacteria involved in each infection, and the generation of the antibiotic is merely a classification based on its development.
The effectiveness of an antibiotic is determined by its efficacy against the specific bacteria, not simply by its generation.

4.
It is generally recommended to administer the influenza vaccine to children after they turn one year old.

Reply Date: 2001/01/31

More Info


When it comes to the timing of the influenza vaccine and pediatric health concerns, there are several important factors to consider.
Firstly, the influenza vaccine is typically recommended to be administered in the fall, around October, as this timing aligns with the onset of the flu season in many regions. However, it is important to note that the vaccine can still be effective if administered later in the season, even as late as January or February. The effectiveness of the vaccine is primarily determined by the match between the vaccine strains and the circulating strains of the virus for that particular flu season. Therefore, if you received the vaccine in October of the previous year, it would primarily protect against the strains that were prevalent at that time. If you are considering getting vaccinated again this year, it is advisable to do so as soon as possible, especially if you are in a high-risk group or if the flu season is particularly severe.

Regarding your child, who was born in March of last year and has not yet received the influenza vaccine, it is understandable to be cautious given their young age. The Centers for Disease Control and Prevention (CDC) recommends that children aged 6 months and older receive the influenza vaccine annually. If your child has recently recovered from illnesses such as bronchial pneumonia, otitis media (middle ear infection), or acute gastroenteritis, it is generally advisable to wait until they are fully recovered before administering any vaccines. A good rule of thumb is to wait at least 2-4 weeks after the resolution of symptoms to ensure that their immune system is back to baseline and can respond effectively to the vaccine.

As for the connection between middle ear infections and pneumonia, it is indeed possible for an ear infection to occur as a complication of pneumonia, especially in young children. The respiratory tract and the ear are interconnected, and infections can spread from one area to another. Middle ear infections can also occur independently, often due to viral infections or allergies.
Regarding the use of antibiotics, it is important to understand that not all ear infections require antibiotic treatment. Many cases are viral and will resolve on their own. However, if a bacterial infection is suspected, antibiotics may be prescribed. The choice of antibiotic depends on various factors, including the age of the child, the severity of the infection, and any previous antibiotic use. Second-generation antibiotics are often used for ear infections, but if the infection does not improve or recurs, a stronger antibiotic may be necessary.
Antibiotics have their advantages, such as effectively treating bacterial infections, but they also come with potential downsides, including side effects and the risk of developing antibiotic resistance. It is crucial to use antibiotics judiciously and only when necessary. Always follow your healthcare provider's guidance regarding the use of antibiotics and any follow-up care.

In summary, it is important to stay informed about the timing of vaccinations, especially for influenza, and to ensure that your child is healthy before administering any vaccines. If you have any concerns about your child's health or vaccination schedule, it is always best to consult with your pediatrician for personalized advice.

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