Influenza virus vaccine, h1n1, inactivated Side Effects
It is possible that some side effects of influenza virus vaccine, h1n1, inactivated may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
For the Consumer
Applies to influenza virus vaccine, h1n1, inactivated: parenteral injectable suspension for im use
Side effects include:
Only limited data available to date regarding adverse effects of parenteral inactivated influenza A (H1N1) 2009 monovalent vaccine. (See Ongoing Safety Review under Cautions.) Adverse effects expected to be similar to those reported with seasonal parenteral trivalent inactivated influenza vaccine. Most common adverse effects reported with seasonal parenteral inactivated influenza vaccine are injection site reactions (i.e., tenderness, pain, redness, swelling), hypersensitivity reactions (e.g., rash), influenza-like symptoms, headache, fatigue, myalgia, fever, malaise.
Data to date indicate the most common solicited adverse effects in healthy adults 18–64 years of age who received a single dose of parenteral inactivated influenza A (H1N1) 2009 vaccine were tenderness at the injection site (36.7%), pain at the injection site (21.7%), headache (31.3%), malaise (17.5%), and myalgia (17.1%).
For Healthcare Professionals
Applies to influenza virus vaccine, h1n1, inactivated: intramuscular suspension
Gastrointestinal side effects have included diarrhea and nausea.
General side effects have included malaise and fatigue.
Local side effects have included pain, erythema, ecchymosis, induration, and swelling.
Musculoskeletal side effects have included myalgia.
Nervous system side effects have included headache. Neurological disorders temporally associated with influenza vaccination such as encephalopathy, optic neuritis/neuropathy, partial facial paralysis, and brachial plexus neuropathy have been reported.
Respiratory side effects have included nasopharyngitis, upper respiratory infection, nasal congestion, and pharyngolaryngeal pain.
Hypersensitivity side effects have included hives, angioedema, allergic asthma, and systemic anaphylaxis.
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