Question

Write a note on the price raise before and after Covid 19. (comparitive study)​

Answer 1

it is helpful you

Explanation:

In the weeks after France ended its first lockdown, nine residents with COVID-19 symptoms went undetected for every person confirmed to have the disease — despite a nationwide surveillance programme.

The findings show that a low rate of positive test results does not always equate to a high rate of detected cases. The results also suggest that many people with symptoms of COVID-19 did not seek medical advice or testing.

Countries need to implement more aggressive and efficient testing of people with suspected infections if surveillance is to be a useful tool for fighting the pandemic, the researchers say.