Coronavirus takes no account of Ramadan
The government had imposed a full lockdown in the Blida area, south of the capital Algiers and a night curfew in the country's remaining 47 provinces until 19 April.
"All other preventive measures will remain in place," the office said in a statement, referring to measures including the suspension of flights and public transport and closure of universities, schools, restaurants and cafes.
Algeria has so far reported 2,418 infections and 364 deaths.
Bangladesh has announced it will provide food support for 50 million low-income people affected by the global coronavirus pandemic that has killed at least 84 people in the South Asian country.
Prime Minister Sheikh Hasina made the announcement on Saturday in a brief parliamentary session that was convened amid a nationwide lockdown to stem the spread of the virus.
The government will also bring an additional 5 million households into a scheme to provide subsidised grains from the public distribution system, she said. Twenty-five million people have already been allowed to purchase subsidised food under the nationwide programme.
Money, she said, will be diverted from comparatively less important development projects to meet expenses for the well-being of the country of more than 160 million people, 10 percent of whom are considered extremely poor.
Egypt, which has a population of 100 million, has reported 3,490 cases of the new coronavirus, including 264 deaths. Top officials have expressed confidence they can contain the outbreak through measures including quarantine, a night curfew in place since 25 March and public information campaigns.
But since the country's first case on 14 February, relatives and rights groups have called for the release of detainees, including political prisoners swept up in a crackdown on dissent under President Abdul Fattah al-Sisi.
Some rights groups, lawyers and current and former prisoners say inmates are often kept in cramped, dirty cells and lack running water, adequate ventilation and healthcare: conditions ripe for the rapid transmission of disease.
While countries including Iran, Germany and Canada have freed prisoners in an effort to contain the coronavirus epidemic, Egypt has given no public sign it will do so.