"At this point, it's not cost beneficial to declare an international state of emergency," a WHO official said of the 45-case outbreak that has killed 25 people.
"This is a concerning development" the WHO director-general says.
The WHO says participation in the ring vaccination efforts will be voluntary.
In addition, the WHO is eyeing a ring vaccination strategy to reach those most at risk.
The DRC now has 2 confirmed, 25 probable, and 12 suspected cases—39 total.
Twelve more people in five states have been sickened with Salmonella from eggs produced by an Indiana farm, bringing the outbreak total to 35 cases in nine states, the Centers for Disease Control and Prevention (CDC) said in an update yesterday.
The outbreak area covers 37 miles of rough, difficult-to-access terrain.
The WHO said, of 21 cases, 17 have links to other cases and 3 are in health workers.
The Centers for Disease Control and Prevention (CDC) today confirmed 28 new cases of Escherichia coli infections and four newly affected states in an outbreak tied to eating romaine lettuce from the Yuma, Ariz., growing region that has caused higher rates of severe disease than is typically seen with E coli.
In the past 5 weeks, 21 cases of viral hemorrhagic fever have been reported in the area, 17 of them fatal.
