First of all, supply and demand is one of the reasons for the increase in vegetable prices during SARS. Other reasons are not detailed here.

In my opinion, due to the high spread of SARS virus, road transportation and other aspects were directly affected during SARS, resulting in a decrease in vegetable supply (the passage from the place of origin to the supermarket was blocked). At the same time, due to panic factors, citizens have been frantically hoarding goods, leading to an increase in demand, resulting in insufficient supply, increased demand and rising prices.