If influenza makes people sick and seriously ill faster than SARS-CoV-2, why has SARS-CoVid-19 displaced influenza since 2019/2020?
"As you know, influenza really has a history of unpredictability. And I don't have to tell you we had no a…
If influenza makes people sick and seriously ill faster than SARS-CoV-2, why has SARS-CoVid-19 displaced influenza since 2019/2020?
"As you know, influenza really has a history of unpredictability. And I don't have to tell you we had no activity during the last year in the US, and minimal globally. And this, as you know, has never really happened since we've had surveillance for influenza."
"And so the question really of co-circulation, could that occur, and what are the implications for co-circulation of these two viruses? And I think the bottom line is, we just don't know. As I mentioned, there's been minimal activity of influenza in the past year and a half, and we haven't seen much co-circulation even in the literature."
"There are some differences between influenza and SARS-COV-2 that are highlighted here. Some of the key differences, I think for testing purposes, incubation period for influenza is quite a bit shorter than SARS-COV-2, about one to three days versus two to 14 days. The viral shedding, the period of viral RNA detection is generally shorter for influenza than what's been seen with SARS-COV-2."
"In the hospital setting, the timing of onset of what we call severe disease and presentation to the hospital typically happens earlier with influenza, at least most cases of severe influenza tend to come in within a few days of the infection onset. Whereas we've seen with COVID typically patients present during week two, days eight, nine, 10 or later."
"So I think suffice it to say, clinically there's lots of overlap between the two viruses, and so it'll be challenging to tell the two viruses apart."
Next Oct, 4 2021
https://www.cdc.gov/csels/dls/preparedlabs/covid-19-clinical-calls/2021-september.html
https://www.cdc.gov/csels/dls/preparedlabs/documents/covid-19-response-calls/transcript_09_20_2021.pdf
https://www.cdc.gov/csels/dls/preparedlabs/documents/covid-19-response-calls/09_20_2021_slides_508.pdf
https://cdn.who.int/media/docs/default-source/influenza/influenza-updates/2021/2021_09_27_surveillance_update_403.pdf?
