can the flu shot give you pneumonia?
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Although the influenza vaccine is relatively safe and effective, serious complications can develop in rare cases. We encountered two cases of interstitial pneumonia that developed after vaccination during the 2014-2015 influenza season.
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In fact, the same viruses that cause colds and the flu can cause pneumonia. If they infect the throat, sinuses, and upper respiratory tract, they cause a cold. If they reach the lungs, they cause pneumonia. Bacteria that live permanently in many peoples' throats cause some of the more severe types of pneumonia.
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Most cases of pneumonia will cause chest pain, especially what doctors call "pleuritic chest pain," or painful breathing. Beyond that, the symptoms depend only somewhat on the underlying cause. About half of all cases of pneumonia are caused by viruses, including flu viruses.
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Bronchitis can lead to pneumonia if you don't seek treatment. Bronchitis is an infection of the airways that lead to your lungs. Pneumonia is an infection inside one or both lungs. If bronchitis is left untreated, the infection can travel from the airways into the lungs.
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Pneumonia vs. Cold symptoms tend to start slowly. You're more likely to sneeze and have a runny nose and sore throat than with either the flu or pneumonia.
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The flu shot is safe, and you cannot get the flu from the flu shot. Most people have little or no reaction to the flu shot and the most common side effect is some discomfort in your arm hours after receiving the vaccination, including soreness, redness and/or swelling.
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Most cases of pneumonia follow a viral upper respiratory tract infection. Typically, the viruses that cause these infections (respiratory syncytial virus, influenza, parainfluenza, adenovirus) spread to the chest and produce pneumonia there. Pneumonia also can be caused by bacterial infections.
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It is possible to have pneumonia without a cough or fever. Symptoms may come on quickly or may worsen slowly over time. Sometimes a person who has a viral upper respiratory infection (cold) will get a new fever and worsening that signals the start of the secondary bacterial infection.
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The injectable Afluria (flu shot) is a "killed virus" vaccine. Influenza virus vaccine is also available in a nasal spray form, which is a "live virus" vaccine. This medication guide addresses only the injectable form of this vaccine. You can still receive a vaccine if you have a minor cold.
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The high dose and adjuvanted flu vaccines may result in more of the temporary, mild side effects that can occur with standard-dose seasonal shots. Side effects can include pain, redness or swelling at the injection site, headache, muscle ache and malaise, and typically resolve with 1 to 3 days.
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A flu shot: The viruses in a flu shot are killed (inactivated), so you cannot get flu from a flu shot. Some minor side effects that may occur are: Soreness, redness, and/or swelling where the shot was given.
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According to the CDC, mild side effects from the flu shot include soreness, redness or swelling at the injection site, low-grade fever and aches. Only about 1 percent to 2 percent of people who get a flu shot will have fever as a side effect, Schaffner said.
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Pneumonia vs. You might be feeling better, but then you start getting symptoms again -- and this time, they can be a lot worse. Cold symptoms tend to start slowly. You're more likely to sneeze and have a runny nose and sore throat than with either the flu or pneumonia. Colds don't usually cause a fever in adults.
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Viral and bacterial pneumonia symptoms are quite similar If you have pneumonia—either bacterial or viral—you'll typically have a cough that brings up sputum, fever, shortness of breath, and chest pain when you cough or take a deep breath, says Kimberly Brown, MD, MPH, an emergency medicine doctor in Memphis, Tennessee.
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Bottom line: It's normal to feel soreness, redness, tenderness, or even develop a mild fever or body aches during the two days after you get vaccinated—that's just your immune response, not the flu illness itself. So there's no reason to avoid getting the flu shot because you think it'll make you sick.
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A: Like the flu shot, the flu nasal spray — also called the live attenuated influenza vaccine (LAIV) — may cause headache, dizziness, fainting, and a slight fever. However, the nasal spray can also cause other side effects that the shot doesn't, including tiredness, loss of appetite, runny nose, and sore throat.
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Common side effects from a flu shot include soreness, redness, and/or swelling where the shot was given, headache (low grade), fever, nausea, muscle aches, and fatigue. The flu shot, like other injections, can occasionally cause fainting.