PIMSO 2025 - Science - Primary 4 - National Round Question 6
PIMSO Science · PIMSO 2025 - Science - Primary 4 - National Round
One of the symptoms associated with the COVID-19 disease is pneumonia which leads to breathing difficulty among patients. This is due to the SARS-CoV-2, the causative virus of the COVID-19, infecting the alveoli of the respiratory system. How does the viral infection cause the pneumonia?
Infection triggers asthma, causing breathing difficulty.
Infection causes phlegm to thicken and block the bronchi.
Infection occupies the limited space in the alveoli, blocking access to oxygen.
Infection causes pus to develop in the alveoli, disrupting gas exchange.