Infectious disease can be caused by virus, fungi, bacteria, or parasites which can be spread from one person to another directly or indirectly.
Practicing good hygiene is important to avoid the contraction of infectious disease. Washing hands several times properly and before eating with other good hygiene can reduce the chances of getting infectious disease.
We should avoid going to those places where the vectors of infectious disease are present like hospitals so we should not come in contact with the infected person and their belongings to avoid infectious disease.
So practicing good hygiene and avoiding contact with vectors can avoid the contraction of infectious disease.
I would advise her not to lose any weight at all as according to the skin fold test which measures her body mass index she has 22 percent body fat which is in the normal/healthy weight range. Any BMI between 18.5 to 24.9 is considered healthy. If she really wanted to she could lose the 7 pounds as long as she stays within the healthy BMI levels and doesn't drop any lower than 18.5 but she really doesn't need to.
