The two ways to do that is by increasing your body immunity and using antiviral herbs.
Some of the remedies to take when suffering from Swine flu are-
1) Take One glass of warm water and mix it with one and half teaspoon of ginger juice and quarter spoon turmeric powder. Mix all these and take this with warm water.
2) In right hand press the point below the thumb. In left hand press the tip of 1st and 2nd finger.
3) Ginger juice-1spoon, Tulsi(Holy basil)juice-1spoon, Honey-1spoon, Garlic juice-Quarter teaspoon, Turmeric powder-Quarter spoon.
Mix evrything and take 2spoon 3times a day.
4) Make this drink and keep drinking when ever you are thirsty. Mix black salt, Cumin (Jeera)powder,Ginger and Honey.
5) Keep fast but take fluids in the form of above drink.
6) Fresh turmeric, cut it into pieces and keep in your mouth and keep sucking and chewing.
7) Take Trifala(Its mixture of chebulic myroblan,Indian gooseberry and belliric myroblan) 1-3 teaspoon, Castor oil-1teaspoon, Seina leaves-1-1/2 teaspoon , Take this at night while fasting to clear the stomach.
8) Detoxification of body in 3 days.
Take 1st 3 days-take Green Beans(Mung)soup clear after that for 2 days-take Mung soup and Spinach. It detoxifies the body.
9) Holy basil is very good herb to take,it keeps your throat and lungs clear and helps in infections by increasing your immunity.Take 5-6 leaves of holy basil and chew them 3 times a day.(But always rinse your mouth with warm water or wash it down with it).
10) Some other herbs that help in increasing immunity and are antiviral are Elderberry, Garlic, Ginger, licorice.
11) Those who can take garlic, must have 2 pods of raw garlic first thing in the morning.To be swallowed with luke warm water.