Study shows Spain far from having 'herd immunity' to virus

In this Monday, June 1, 2020 photo, people walk past a terrace bar with local customers in Barcelona downtown. Spain's strict lockdown that it is now scaling back managed to eventually control a COVID-19 outbreak that has claimed at least 27,000 lives. (AP Photo/Emilio Morenatti)
In this Monday, June 1, 2020 photo, people walk past a terrace bar with local customers in Barcelona downtown. Spain's strict lockdown that it is now scaling back managed to eventually control a COVID-19 outbreak that has claimed at least 27,000 lives. (AP Photo/Emilio Morenatti) (Copyright 2020 The Associated Press. All rights reserved.)

MADRID

MADRID (AP) — A second round of random testing in Spain for antibodies to the new coronavirus indicates that a third of those infected do not develop symptoms, Spanish health authorities said Thursday.

“It is a wake-up call for public health: it is not possible to control (an outbreak) by just considering those who are symptomatic,” National Epidemiological Center Director Marina Pollán said.

“With this number of asymptomatic cases, we must follow the recommendations” for personal hygiene and social distancing, Pollán said.

Results from the latest round of the nationwide testing confirmed preliminary finding published three weeks ago showing that blood tests detected the IGG antibody against the virus in only 5% of the 63,000 participants.