New cases of COVID-19, with new variants, are leaving several scientific communities around the world quite concerned.
According to health officials, these fluctuations may be related to the emergence of new sublineages of the virus, the decline in immunity acquired over time, and the relaxation of epidemiological surveillance strategies. In many countries, the significant reduction in testing makes it difficult to conduct a rigorous assessment of the situation.
“We are observing an irregular but persistent pattern of increasing cases in certain regions, especially during the winter months,” a specialist noted, warning about the risk of underestimating the problem.
Health authorities emphasize that, despite the lower average severity of cases, vulnerable groups such as the elderly and people with chronic illnesses remain at risk. In some healthcare systems, there is already increased pressure on emergency services during the winter months.
Experts argue that countries should maintain active monitoring systems and have response plans ready to be activated, warning that COVID-19 has become endemic., but it did not fail to represent a significant challenge.

