In a sick or elderly person with limited reserve, it would very possibly be life-threatening or even lethal. And I am not out of the woods yet. Her course was milder than mine, but two of her children have become quite ill. Flumantadine seemes to work. Subsequently, this experience has been borne out in two other cases not involving cryonics.
Influenza can be a disaster to a geographically tightly knit team.
The infectiousness of influenza is hard to underestimate. Incubation time is 24 to 48 hours and can completely disable an entire standby and perfusion team in the same time frame. Even for large institutions such as hospitals or schools influenza can cause closure or in the case of hospitals, life-threating cuts in staffing and services. Patients who are immunocompromised, or are fragile, or ill, are at special risk. This is particularly the case if home visits such BPI makes are done regularly with more than one seriously ill patient being visited.