Cases and Outbreaks from Previous Years

Purpose

See previous numbers of confirmed AFM cases and outbreaks in the U.S. by state.

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Reminder

Current cases of confirmed AFM are reported here: AFM Cases & Outbreaks.

2024

In 2024, there were 25 confirmed cases in 15 states.

2023

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AFM Reported Cases 2023
In 2023, there were 19 confirmed cases in 14 states.

2022

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AFM Reported Cases 2022
In 2022, there were 48 confirmed cases in 28 states.

2021

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AFM Reported Cases 2021
In 2021, there were 29 total confirmed cases in 16 states.

2020

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AFM Reported Cases 2020
In 2020, there were 34 confirmed cases in 19 states and the District of Columbia.

2019

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AFM Reported Cases 2019
In 2019, there were 47 total confirmed cases in 18 states.

2018

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AFM Reported Cases 2018
In 2018, there were 238 total confirmed cases in 42 states. One of the confirmed cases is a foreign resident (based on the country of usual residence) and therefore not included in the state map.
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Content Source:
National Center for Immunization and Respiratory Diseases; Division of Viral Diseases