Unfortunately, it is not possible to objectively verify this claim, because it is the speculation made by a writer amid the COVID-19 lockdown.
A Facebook post claimed to be written by a doctor working in Broad Green Hospital, England states that the economy is heading for the biggest recession in 300 years. It urges people to learn about the lockdown consequences before starting any campaigns or signing petitions to stay under lockdown. The longer the people stay under lockdown, the closer will be the next Flu season. The post even speculates with the lockdown measures extended, will the people's life be protected, as there is a risk of a second and third spike in quick succession.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.