In my opinion, no research is conducted on the correlation of vitamin C with incidence or mortality of COVID-19. We all know that vitamin C is an important nutrient, and is required in many body functions including immune system. If immune system is strong, there is a very possibility to get infection. Lemon is a very cheap and easily available source of vitamin C throughout the world.The other natural sources of vitamin C include orange, strawberries, papaya , guava, grapefruit, Kiwi, cauliflower, broccoli etc.
I add juice of one lemon in one glass of Luke warm water and drink empty stomach daily in the morning.
If our immune system is strong, there is a very less possibility to get infection. Hence, we must boost our immune system by daily taking Vitamin C rich foods.
I emphasize to undertake detailed research to study the correlation between Vitamin C status and incidence or mortality of COVID -19 patients.
The conclusions reached by this article, which are entitled: Is IV vitamin C effective against COVID-19?, the following:
Although doctors are using IV vitamin C, there is no published scientific evidence about the use of IV vitamin C in COVID-19. Therefore, we cannot fully evaluate its effectiveness.
For more information about vitamin C in the immune system, see the Micronutrient Information Center.