Weather conditions have no direct effects on gastrointestinal diseases, but there are indirect impacts. For instance, in rainy season, it is colder and more humid, which prompts germs to spread more easily. Also, the water we drink and use is more likely to be contaminated with bacteria.
Most common gastrointestinal diseases found in rainy season are linked to gastrointestinal infections such as Acute Gastroenteritis, Food Poisoning, Dysentery, Typhoid, Acute Hepatitis from either type A or B. All of these are more likely to happen.
To prevent gastrointestinal infections in rainy season, the easiest way is to maintain hygienic or sanitary habits such as washing hands before and after meals and cooking, or eat fully freshly cooked meals. Moreover, to stay protected from Hepatitis, we can get vaccines against it.