English archive > Cold > What happens when we catch a cold?

VIRUSES attack by penetrating our body and weakening its defenses.

They are transmitted by contact with objects or droplets of saliva that infected people expel when they speak or sneeze. That is why it is easy to catch a cold.

Many people may think that there must be a vaccine, but in fact it is not possible to fight all the different viruses that intervene in the illness.