Flu
Influenza, more commonly called the flu, is a contagious virus that targets the nose, throat, and lungs. While many types of flu are easily treated, others can be extremely dangerous. Readers will discover how the flu is spread and how the body works to fight infection. They will also learn why it is important to protect against the flu using vaccines and why some types of flu deadlier than others.
Komentáře
Přihlas se, abys mohl/a přidat komentář.
Zatím žádné komentáře. Buď první!