The government had said on Monday it would tighten restrictions on movement and gatherings because of rising infections, less than a month after easing them.
President Tayyip Erdogan announced the tightening, including the return of full nationwide weekend lockdowns for the holy Islamic month of Ramadan.
The latest daily death toll was 155, bringing the cumulative toll to 31 385, according to the data.
Health Minister Fahrettin Koca told reporters in parliament that new variants of the coronavirus, which officials have blamed for the spike in infections, had now been seen in every province.
“Currently, the rate of the mutations in Turkey has reached some 75%.
In some provinces, it is at around 50-55%, but there are provinces where it is at 95%,” Koca said.
Most were of the variant first identified in Britain, with much smaller numbers of those first identified in South Africa and Brazil, Koca said.
Opposition parties and other critics condemned President Tayyip Erdogan and his government last week for organising a congress for the ruling AK Party with thousands of people, many of whom were seen violating social distancing rules, not wearing or improperly wearing masks.
Koca dismissed the criticisms and called for more vigilance from Turks. “We must show a bit more effort in protecting those in risk groups and limiting close contact. Until when? At least until vaccination is finished,” he said.
Turkey has until now been using COVID-19 vaccines developed by China’s Sinovac Biotech Ltd and has carried out 15.67 million inoculations, with 8.88 million people having received a first dose, since January 14 when the nationwide rollout began.