A 31-year-old health care worker became infected with Covid twice within 20 days. This is the shortest period recorded between infections, Spanish researchers have claimed.
Tests show the woman was infected with two different variants - Delta in late December and then Omicron in January. This shows that even if you have had Covid before, you can become infected again even if you are fully vaccinated, researchers say.
The Spanish woman showed no symptoms after the first positive PCR test, but less than three weeks later she showed cough and fever that prompted her to do another test. When the tests were further analyzed, they showed that the patient was infected with two different types of coronavirus.
In a presentation at the European Congress of Clinical Microbiology and Infectious Diseases, study author Dr. Gemma Recio said the case showed that Omicron could "avoid previously acquired immunity from an infection with other variants or from vaccines".
She said monitoring re-infections in people who were fully vaccinated was important and would help look for vaccine-avoiding variants.
Source: BBC
