Key points

• Among infants

  • Following the sharp increases in vaccination coverage recorded after the “mandatory vaccination” law took effect in 2018 and 2019, vaccination rates among infants continued to rise across the region, albeit at a more gradual pace, with 2020 levels exceeding those of France as a whole by 2 percentage points:

  • 93% use of hexavalent vaccines, including hepatitis B, for a complete vaccination schedule

  • 93% complete coverage against pneumococcus and meningococcus serogroup C

  • 87% complete coverage with the Measles-Mumps-Rubella vaccine

The Loire-Atlantique department had the lowest coverage rates in each of the past years and for each vaccine type: in 2020, these rates were approximately 2 percentage points below the regional averages.

• Among adolescents

  • Meningococcal C vaccination: +5 percentage points in vaccination coverage among 10- to 14-year-olds (65%) but remains insufficient to ensure herd immunity, as is the case among 15- to 24-year-olds.

• HPV vaccination:

  • At least one dose by age 15: +6 percentage points among girls compared to last year (56% vs. 50%), ranking first in France among boys (8%)

  • Two doses by age 16 among teenage girls: +6 percentage points compared to last year (48% vs. 42%).

• Among people at risk of severe influenza

  • Flu vaccination coverage is 56% for 2021–2022, compared to 59% the previous season. It remains 3 percentage points higher than the rate recorded in mainland France.