Italy Sees Mild Weather While Respiratory Illnesses Rise Ahead of Winter Flu Season
Italy is currently experiencing unseasonably mild temperatures despite persistent rain, with true seasonal influenza yet to arrive while other respiratory infections spread through communities. Public health officials emphasize that the influenza virus has not disappeared and warn that the coming weeks could bring a rapid acceleration in contagion rates.
Transition Period Brings Rhinovirus and Covid-19 Cases
While true influenza remains delayed, doctors across Italy are treating patients for a variety of overlapping respiratory bugs. Dr. Elisabetta Alti noted in an interview that current circulating pathogens include parainfluenza viruses, which target the upper respiratory tract and pose particular risks to vulnerable populations. Symptoms typically involve high fever, dry cough, and exhaustion lasting three to six days. Medical professionals note that rhinovirus, seasonal coronaviruses, adenovirus, and continuing circulation of Sars-CoV-2 are also driving current clinic visits, alongside early cases of respiratory syncytial virus (RSV) affecting young children and the elderly.
Experts recommend vaccination before Christmas to reduce stroke risk
Fabrizio Pregliasco, director of the hygiene and preventive medicine specialization school at the University of Milan, warns against waiting for cold weather or full hospital wards to seek protection. Experts recommend getting vaccinated between October and November ahead of the peak period typically arriving around the Christmas holidays. In addition to preventing severe pulmonary complications, recent medical literature highlights that both influenza and RSV infections increase the short-term risk of myocardial infarction and stroke during the month following the acute phase, due to the release of inflammatory cytokines.
Why flu season delays and vaccine strains matter?
Why is the flu season delayed during mild rainy weather?
Relatively high temperatures can slow down certain environmental conditions that favor viral spread, but viruses do not require cold weather to exist. Fabrizio Pregliasco explains that cold weather primarily aids transmission indirectly by driving people indoors into poorly ventilated spaces.
What specific strains are targeted by the current vaccines?
The vaccine composition for the 2026-2027 season has been updated by the World Health Organization to monitor type A viruses, specifically the H1N1 and H3N2 subtypes, as well as type B influenza viruses.
How long does it take for the influenza vaccine to become effective?
It generally takes about two weeks following the injection for the body to develop an adequate immune response and protective barrier against the circulating strains.