As we all probably know, influenza virus thrives in colder conditions, hence it`s seasonal character.
But, what temperatures are high enough to kill it? That we will discuss in this article.
The influenza virus can “live” on some surfaces for up to 48 hours. Routine cleaning of surfaces may reduce the spread of flu.
As WHO guidelines say, a temperature of 75° C is enough to kill influenza virus. That could be the problem in households and there is a need for chemical substances to finish viruses.
Generally, boiling water will kill influenza virus. So will tumble dryer if set to high heat.
Influenza virus is also dependable on pH values. It will be inactivated in pH 1–2 for 30 min or pH 3 overnight. However, the viruses still retained their infectivity when treated under pH 4–12 for 24 h or pH 3 for 30 min or 1 h. The results of a study suggested that the novel avian influenza H7N9 virus has a strong tolerance to moderately acidic to higher alkali conditions.
That is why we need a more efficient way of killing viruses in the industrial background and that is where UV-C lights come to the rescue. 
Different equipment based on UV-C light irradiation can be used, from UV-C lamps for room disinfection to wombs used for working apparel.
UV-C lights can also be used to disinfect planes and buses between their shifts.
The flu virus is proven to be inactivated by 98% or more when using UV-C light of 254nm in clinical tests. As we already wrote, these wavelengths have to be used with caution and people who use them have to be trained in order to avoid potential health harm to human tissue.
As technology progresses, far-UV-C lights are proving to be almost completely unharmful to humans and can be used for disinfection of spaces while people are inside them.

When we come to SARS-CoV-2 virus, Far-UV-C light (222nm) also shows to be the most efficient and safe in the inactivation of said virus…

Paper currency and coins may be a public health risk when associated with the simultaneous handling of food and could lead to the spread of nosocomial infections…

Decontaminating work apparel is probably the best way to reduce sick-related leave costs in times of epidemics or pandemics…

The influenza virus can “live” on some surfaces for up to 48 hours. Routine cleaning of surfaces may reduce the spread of flu…

The effective resistance of many types of microorganisms to UV-C varies considerably. We should know that the germicidal effect starts directly after the irradiation…

All kinds of germs are found in public transport vehicles, so it is important to take care of that part of public health security by disinfecting those vehicles the proper way…