https://science.sciencemag.org/content/368/6496/1163.longCOVID-19 and flu, a perfect storm
We do not yet have a COVID-19 vaccine, but safe and moderately effective influenza vaccines are available. Their widespread use is more important now than ever, and we encourage health care providers, employers, and community leaders to promote vaccination. Vaccine effectiveness varies by season and subtype, but vaccination offers similar protection against laboratory-confirmed influenza hospitalization and outpatient illness. Widespread misinformation on social media includes the false claim that influenza vaccination increases the risk of SARS-CoV-2 infection. Scientists, health care providers, and public health leaders must counter these claims with clear, evidence-based information on the importance of influenza vaccination during the COVID-19 pandemic.
The prospect of a second COVID-19 wave requires planning to ensure optimal delivery of influenza vaccines starting in the early fall. Community vaccination sites are often set up for maximum volume and efficiency, and alternative approaches will be needed to maintain physical distancing and minimize the risk of SARS-CoV-2 transmission, particularly because many influenza vaccine recipients are at high risk for both influenza and COVID-19 complications. Randomized trials have shown that some enhanced influenza vaccines (e.g., high-dose inactivated vaccine and recombinant vaccines) generate greater protection in older adults compared to standard-dose inactivated vaccine. The optimal timing of influenza vaccination in patients with confirmed COVID-19 is uncertain. There are no clinical studies on the effects of influenza vaccination in patients with COVID-19, but it may be prudent to delay vaccine administration until after the acute illness has resolved.
secondo me più che potenziare il sistema immunitario, il vaccino anti-influenzale fa in modo che non ci sia una risposta infiammatoria massiva. in questo modo, la famosa tempesta di citochine associata ai casi più gravi di Sars-CoV-2019 potrebbe essere più lenta.