Annual vaccination in the US against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication. Influenza vaccines that are available in the US for the 2023-2024 season are listed in Table 2.

Annual vaccination in the US against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication. Influenza vaccines that are available in the US for the 2023-2024 season are listed in Table 2.

Annual vaccination in the US against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication. Influenza vaccines that are available in the US for the 2022-2023 season are listed in Table 2.

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication.1 Available influenza vaccines for the 2021-2022 season are listed in Table 2.

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication. Vaccination of all eligible persons can reduce the prevalence of influenza illness and symptoms that might be confused with those of COVID-19. Available vaccines and recommendations for specific patient populations for the 2020-2021 season are listed in Tables 2 and 3. Lower rates of influenza illness have been observed this season in the Southern Hemisphere, probably because of masking, social distancing, school closures, and travel restrictions.

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a contraindication. Available vaccines and recommendations for specific patient populations for the 2019-2020 season are listed in Tables 2 and 3.

Routine annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old. Recommendations for the current season for specific patient populations are listed in Tables 2 and 4.

Routine annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a specific contraindication.

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a specific contraindication.

Annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a specific contraindication.

Annual vaccination against influenza A and B viruses has been shown to decrease influenza illness and its complications.

Vaccines recommended for adults residing in the US are reviewed here. Vaccines for travel have been reviewed separately.

Eight vaccines are currently recommended by the US Advisory Committee on Immunization Practices (ACIP) for routine use in adults at various ages...

Annual vaccination against influenza A and B viruses has been shown to decrease influenza illness and its complications. Several new vaccines are available for the current season.

Two new trivalent influenza vaccines, Flucelvax (Novartis) and Flublok (Protein Sciences), will soon be available for prevention of seasonal influenza in adults ≥18 years old (Flucelvax) and 18-49 years old (Flublok). Unlike other available influenza vaccines, neither vaccine is produced in eggs, removing any concern regarding use in egg-allergic patients. Avoiding the use of eggs should allow for faster production of these 2 new vaccines, which could be especially beneficial during a pandemic.

Flucelvax is prepared in a similar manner to other influenza vaccines, but the influenza virus is grown in canine kidney cell culture instead of chicken eggs. In an unpublished study summarized in the package insert comparing Flucelvax with placebo in more than 11,000 patients during the 2007-2008 season, the new vaccine was effective in preventing about 84% of cases of influenza due to matching strains and was about 70% effective when non-matching strains were included.

Flublok is produced without use of influenza virus or chicken eggs; a gene that encodes for hemagglutinin antigen (HA) is introduced into baculovirus, a virus that infects insect cells, and the replicating baculovirus produces large amounts of HA. In a study in about 4,600 adults conducted during one influenza season, Flublok was about 45% effective compared to placebo in preventing culture-confirmed influenza despite a significant antigenic mismatch between the vaccine and circulating viruses (96% of circulating strains did not match the vaccine). It was 75% effective in preventing illness caused by matching strains.1

Both Flublok and Flucelvax provide protection against the same strains as the other vaccines available for the 2012-2013 influenza season.2

1. JJ Treanor et al. Protective efficacy of a trivalent recombinant hemagglutinin protein vaccine (FluBlok) against influenza in healthy adults: a randomized, placebo-controlled trial. Vaccine 2011; 29:7733.

2. Influenza vaccine 2012-2013. Med Lett Drugs Ther 2012; 54:77.

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