A study in Spain has found that only a small percentage of people have COVID-19 antibodies, warning that herd immunity will be “difficult to achieve.”

With at least 251,789 diagnosed cases and at least 23,388 deaths, Spain has been one of the worst-affected countries in the coronavirus pandemic, according to data from Johns Hopkins University.

The Spanish study, which was published in the Lancet, involved more than 61,000 participants. Experts from the Institute of Health Carlos III in Madrid, the Spanish Ministry of Health and Harvard’s T.H. Chan School of Public Health worked on the project.

Just 5 percent of those surveyed had antibodies, a number which fell to less than 3 percent in coastal regions, although this was higher in some other parts of Spain. More than 10 percent of people surveyed around Madrid, for example, had antibodies. Read more at FOX News