"It means either the calculations made by the agency and myself are quite wrong, which is possible, but if that's the case it's surprising they are so wrong", he told the Swedish newspaper Dagens Nyheter, according to the Guardian.
The results of the study, from 1,118 tests conducted by Sweden's Public Health Agency, is raising concerns over the country's hesitation to set strict measures to slow down the risks of transmissions. Its goal is to perform the same number of tests every seven days over an eight-week period. Results from other regions will be announced later, a spokesman for the Public Health Authority said.
Sweden has saved most colleges, restaurant and companies open through the pandemic. However, it urged people to focus on personal responsibility and avoid making long journeys.
The findings were roughly in line with models predicting a third of the Swedish capital's population would have had the virus by now and where at least limited herd immunity could have set in, the Swedish Health Agency said on Wednesday. Bjorn Olsen of the Uppsala University in Sweden said that reaching herd immunity is "a long way off" based on the study's findings.
Herd immunity occurs when a large enough percentage of a population becomes immune to a virus, either through infection or vaccination, thus preventing further spread throughout the group.
No society has yet achieved this, and Harvard T says "the herd gets immunized quickly" rather than a vaccine. "Or more people have been infected than developed.antibodies".
Just 7.3% of Stockholm's residents have developed coronavirus antibodies by April's end amid Sweden's bid for herd immunity, a new study reveals.
Experts say at least 60% of a population needs to catch the virus before any protective immunity can be achieved. A report he wrote along with other epidemiologists and a historian estimated this would likely take 18 to 24 months.
The World Health Organization has warned against pinning hopes on herd immunity.
On April 24, chief epidemiologist Tegnell told BBC radio that the authorities believed Stockholm had "an immunity level. somewhere between 15 and 20% of the population".
Defending the strategy, Health and Social Affairs Minister Lena Hellengren said most Swedes had voluntarily minimised their social interactions and movements outside the home.
"This will definitely affect the rate of reproduction and slow down the spread", he said, but it is not enough to achieve "herd immunity".
Sweden According to Johns Hopkins University statistics, there are now 32,172 cases and 3,871 deaths.