The flu, quick for influenza, is a extremely contagious respiratory sickness brought on by influenza viruses. Understanding its contagiousness is essential for efficient prevention and administration. Usually, people contaminated with the flu virus can unfold it to others even earlier than they exhibit signs themselves. The contagious interval sometimes begins in the future earlier than signs develop and may last as long as seven days after changing into sick. In some instances, significantly amongst youngsters and people with weakened immune methods, the contagious interval could prolong even longer.
Extra info examine this tutorial: how long is the flu contagious