Rare monkeypox outbreak in U.K., Europe and U.S.: What is it and should we worry?

There's a monkeypox outbreak in the United Kingdom, Portugal, Spain and other European countries.

The outbreak is small — so far 68 suspected cases,

including eight in England and 20 in Portugal. Cases in Canada and a case in the U.S. have also been reported.

But health officials have little clue where people caught the monkeypox virus.