The leader of Neath Port Talbot council has supported Wales' 'firebreak' lockdown but warned people should not expect it to instantly effect coronavirus cases.
Councillor Rob Jones said the new restrictions, which will see Wales enter another national lockdown from Friday October 23, are necessary but they will not reduce the number of Covid-19 cases in Wales.
He said the Welsh Government and local authorities are expecting the number of coronavirus cases to continue to rise during the lockdown period but "drop down" afterwards.
"The science behind this is not going to show any improvement in the figures because of the incubation period of covid for 14 days.
"During the time of this national lockdown, the figures are not going to change. They may continue to rise, they may continue to plateau, they may fall.
"When we will see a discerning effect on the figures will be after we come out of this lockdown because the 14 day incubation period."
The Labour councillor said he expects some people may be frustrated during the two-week lockdown period if the number of coronavirus cases in Wales does not fall instantly. But he said the measures should "put a handbrake on the spread of covid" and reduce the number of cases after two weeks.
Cllr Jones also said the 'firebreak' lockdown will not be extended and it will only be in place for two weeks.
"This is a finite lockdown. It’s not going to be a rolling lockdown, it has got a beginning and an end. What we do after that is another discussion.
"This isn’t something that we are wanting to do this is something that we are being forced to do. A complacency has crept in and this is the penalty that we end up paying for the virus spreading.
"Until there’s a vaccine we are going to have problems with covid for a considerable period of time because it’s not going to go away."
According to the new rules, primary schools will reopen after the half-term break, but only Years 7 and 8 can return to secondary schools at the same time.
Cllr Jones said schools in Neath Port Talbot are well-prepared for home learning and the decision to close them "has not been taken on a whim" but "driven by the science".
He said primary school and secondary pupils in Years seven and eight can return to school sooner because children up to 16 years old are not being identified as super-carriers.
"There is no substantial evidence of internal transmission of the disease in schools.
"It’s taken into schools and my belief is that this is why they’ve taken a retrograde step to go back to the conditions of no household mixing, no indoor gatherings, et cetera."
To prepare for the upcoming months, the council is seeking vounteers for its 'Safe and Well' scheme which puts people living in Neath Port Talbot in touch with volunteers and local services to help them with food shopping, collecting medication and running errands.
The service can also arrange for someone to check on a resident's wellbeing.