Nigeria is seeing a Lassa fever spike, Paraguay reports its first local measles case since 1998, and 5 nations have new polio cases.
In the lab breach, virus was detected in a sewage sample and was genetically similar to vaccine stocks used at the facility, then a lab worker tested positive.
The state will launch a pilot program to test wastewater for flu, hepatitis A, norovirus, and antimicrobial-resistance genes.
Virus found in Canadian wastewater samples is linked to a polio case and environmental samples identified last summer in New York.
Also, the WHO provides more details about Sudan's first cVDPV2 case of 2022, which was confirmed in late December.
Coverage with state-required vaccines fell to 93% among kindergartners during the 2021-21 school year, down 2 percentage points from 2019-20.
The new cases are from Algeria, the Central African Republic, and the Democratic Republic of Congo.
The CDC is testing the Canadian samples to see if they are genetically related to poliovirus samples from New York.
Sudan's case is its first of the year, and genetic analysis shows it isn't related to the strain that circulated there in 2020.
Tests on samples from an index patient and 3 healthy children confirm polio transmission.