Introduction

Very likely, we have all got a cold before. Remember the last time you had a running nose, nasal stuffiness, sneezing, sore throat and cough? Yes, that was the symptoms of a viral infection. There are about 200 viruses that can cause common colds. No wonder, there is not a vaccine for common colds yet.

What is a common cold
A cold (also known as common colds) is a contagious viral infection of the upper respiratory tract. It is the most common infectious disease in the USA, UK and many other countries.

Experts say kids will have a cold about 5-8 times every year, and adults will have about 2-4 colds a year. This is because kids (especially 1-5year olds) have lower resistance and immunity than grown-ups, and also have lower personal hygiene skills.
It is also known that women have it more than men because they tend to be around kids more often.



Cold cases are more in colder seasons. This is because people stay indoors and in close contact with each other, making it easier for spreading viruses.

Cold is a self-limiting infection (it gets better by itself without the need for treatment)

Dry indoor and outdoor air can lower resistance to infection by the cold viruses. This means if there is too much dryness in your room, try making it a bit more humid.