The strongest evidence that this is continuous measles spread, rather than reintroduction, comes from the virus itself.
With 31 new cases added last week, the nation is close to surpassing the 2,288 infections reported in 2025.
The 4-case outbreak illustrates the difficulty in obtaining complete data on people potentially exposed to the virus.
The live attenuated vaccines don’t appear to cause new or worsening symptoms for MS patients.
Buckingham County, Virginia, has seen 88 cases in the past month.
For well over a year, public health experts have been planning how to protect fans from infectious diseases such as flu, COVID, and measles (part 1 of 2).
An economic analysis credits the WHO’s Expanded Programme on Immunization with saving 154 million lives and slashing infant deaths 40%.
The second case of New World screwworm in Texas was found just 5 miles from the first.
Also, a new report describes an outbreak at a daycare center and the rapid public health response to it.
The report takes a closer look at hospital cases during one of the largest US measles outbreak in years.