Four people suspected of having Ebola in Spain have tested negative in a first round of tests.

Three people who are feared to have contracted Ebola are being tested in Spain for the virus, including one who arrived on an Air France jet that was isolated at Madrid’s airport as a precaution.

Three more people have been placed under quarantine for Ebola at a Madrid hospital where a Spanish nurse became infected, while more than 50 other people are being monitored.

A nurse in Spain who cared for an Ebola patient has come down with the disease, the first known transmission outside West Africa during the current epidemic.