[theo_luddite]

Until recently, the World Health Organization (WHO) estimated the annual mortality burden of influenza to be 250 000 to 500 000 all-cause deaths globally; however, a 2017 study indicated a substantially higher mortality burden, at 290 000-650 000 influenza-associated deaths from respiratory causes alone, and a 2019 study estimated 99 000-200 000 deaths from lower respiratory tract infections directly caused by influenza.

US numbers estimate 22,000 - 55,000 this winter (which has been one of worst flu virus's for a long time) and around 35,000 in the USA over the 2018-19 winter.

We're yet to find out if Covid-19 is seasonal or not.