Page 386 - Primary Six Notes

Emphyse- Emphysema is a lung condition that causes short-

ness of breath. In people with emphysema, the
ma
air sacs in the lungs (alveoli) are damaged. Over

time, the inner walls of the air sacs weaken and

rupture — creating larger air spaces instead of

many small ones.

Lung A cancer that begins in the lungs and most often

occurs in people who smoke.
Cancer

Corona viruses

Coronaviruses are a type of viruses. There are many different

kinds, and some of them cause diseases while others harmless.

A coronavirus identified in 2019, scientists named SARS-CoV-

2, has caused a pandemic of respiratory illness, called COVID-

19.

A pandemic is the worldwide spread of a new disease.

How does this coronavirus spread?

 It spread through droplets and virus particles
V
released into the air when an infected person
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• * •fi • S3 Vi talks, laughs, shouts, coughs or sneezes.
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a:  Larger droplets may fall to the ground in a
4( v. « r - f few seconds, but tiny infectious particles can
vm linger in the air and accumulate especially

where many people are gathered and there is

poor ventilation. This is why mask-wearing, hand

hygiene and physical distancing are essential to preventing

COVID-19.