WASHINGTON—Officials serving at U.S. diplomatic missions in Geneva and Paris are suspected to have been stricken with the mysterious neurological ailment recognized as Havana Syndrome and at least a person was evacuated back again to the U.S. for therapy, people today familiar with the incidents claimed.

Suspected assaults on U.S. officials serving in the two European cities ended up described internally past summer to officials at those posts and finally to the Condition Section in Washington. The diplomats joined as quite a few as two hundred others who came down with suspected Havana Syndrome although stationed in China, South America, and in other places in Europe.