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how long before a flu shot is effective

A 40-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Define effective: The flu strains mutate often. Each year the predominant strains change. The flu vaccine is developed yearly using 3 strains that are circulating and a ... Read More

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A member asked:
Dr. James Ferguson
45 years experience Pediatrics
You don't need to wt: Tdap can be given on the same day or in days prior to and after a flu shot. They do not interfere with each other so they can be given any time they a ... Read More
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A 39-year-old member asked:
Dr. Scott J. Wolfson
21 years experience Pediatrics
It's about strains: The flu vaccine is likely to have protective benefits everywhere. Even if strains are different in different world regions, there should be enough cro ... Read More
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A 40-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
2-4 wks: As above.
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A 45-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Protection delay: It takes the body 2-3 weeks to develop protective antibody to a vaccine. This would apply to the gardisil. The first dose would start the process, but ... Read More
A 56-year-old member asked:
Dr. Mark Diamond
45 years experience Pediatrics
The Next Day: Unless there is a live attenuated vaccine involved, they can be given very close together. Custom has generally seperated them by 1 month ( for no rea ... Read More
A 51-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Immediately: Both can be given on the same day or separate days.There is no reason to delay one or the other.
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A 47-year-old member asked:
Dr. Mark Diamond
45 years experience Pediatrics
Very!!: Although side effects can occur, such as fever, soreness, occasional achiness, and theoretically very rare more serious problems, it is much safer tha ... Read More
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A 37-year-old member asked:
Dr. Alan Levine
33 years experience Pediatrics
Right away: The tetanus vaccine and influenza vaccine are not live vaccines and should, therefore not interfere with your immune systems' response to each individ ... Read More
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A 32-year-old member asked:
Dr. Brian Fishman
8 years experience Emergency Medicine
1 Year: Influenza vaccines are given once a year. Elderly patients, health care workers, immunocompromised patients, and patients with lung disease should be ... Read More
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A female asked:
Dr. Sathish Adigopula
19 years experience Pediatrics
Binge drinking: Binge drinking is unsafe in any condition. No contraindications between alcohol and hpv vaccine. Drink safely and responsibly. Drinking for the sake o ... Read More
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A 23-year-old female asked:
Dr. Brad Goldenberg
35 years experience Pediatrics
1-5 years : Boosters vary in efficacy by type, the most effective can last 3-5 years, but most need to be boosted yearly. Check with
A 45-year-old female asked:
Dr. Edgar Mendizabal
54 years experience Internal Medicine
3 days: Shoulder discomfort might a little longer.
A 66-year-old female asked:
Dr. Heidi Fowler
24 years experience Psychiatry
For one: Flu season. The viral strains protected against - change each year.
A 47-year-old member asked:
Dr. Mark Diamond
45 years experience Pediatrics
No: No, at least not from my experience.
A 42-year-old member asked:
Dr. Larry Lutwick
48 years experience Infectious Disease
Penicllin: It depends upon the kind of penicillin. Regular penicillin (given iv) has a half life of only 1-2 hours but intramuscular penicillin types last longe ... Read More
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A 31-year-old female asked:
Dr. Doanh Nguyen, md, faaaai
13 years experience Allergy and Immunology
Yes: Yes, it's safe to do so. Methotrexate wouldn't suppress your immune system enough to not be able to take flu shots or vaccinations in general.
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A 38-year-old member asked:
Dr. Ira Rubin
Dr. Ira Rubin answered
36 years experience Pediatrics
Flu: Generally the "flu", meaning the seasonal flu which causes high fever, muscle aches, cough , congestion and lethargy, lasts 5 to 7 days in healthy adu ... Read More
A 46-year-old member asked:
Dr. Anthony LaBarbera
27 years experience Pediatrics
See below: There is no specific waiting period.
A 59-year-old male asked:
Dr. Niharika Khanna
38 years experience Family Medicine
For a short time: After the flu shot, the arm may be sore from the needle entering the body and there maybe heaviness at the injection site. Usually the injection site ... Read More
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A 43-year-old member asked:
Dr. Yash Khanna
56 years experience Family Medicine
Can get it any time: You can get it anytime.Flu vaccine is a killed virus and there is no contraindication to getting flu shot when taking prednisone.
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A 30-year-old female asked:
Dr. Jay Park
Dr. Jay Park answered
49 years experience Pediatrics
About 2 years: 2+ years.
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A member asked:
Dr. Yash Khanna
56 years experience Family Medicine
You can : You can as long as you do not drink too much.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

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