President Rodrigo Duterte speaks at a press conference. File photo

Tens of millions of children in the Philippines will not be allowed back to school until a coronavirus vaccine is available, officials announced on Monday, saying they may have to broadcast lessons on TV.

Nations like France and South Korea began resuming face-to-face classes as they got their outbreaks under control, but Philippine authorities see the risk as too great.

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President Rodrigo Duterte said last month that even if students could not graduate, they needed to stay out of school to fight the spread of the disease.

"We will comply with the president's directive to postpone face-to-face classes until a vaccine is available," education secretary Leonor Briones said in a statement on Monday.

Duterte said last month that even if students could not graduate, they needed to stay out of school to fight the virus.

Classes are to resume at the end of August and teachers will use distance learning methods via the internet or TV broadcasts where needed, Briones added.

Millions live in deep poverty in the Philippines and do not have access to computers at home, which is key to the viability of online classes.

"The teacher and the school will have to adjust... depending on the availability of communication," Briones said in a press briefing.

There has been little public opposition to the postponement of face-to-face classes in the Philippines, where hundreds of new infections are being detected daily despite early and strict lockdown measures.

Children are generally not allowed outside their homes unless they are out getting essentials or headed to work.

Online enrolment for over 25 million primary and secondary students started earlier this month for a delayed start to the school year, which normally runs from June to April in the Philippines.

Scientists around the world are racing to develop a coronavirus vaccine, but it is not clear when a viable candidate will be proven and distributed on a large scale.

One of the contenders is from British pharma giant AstraZeneca, which said last week that it is "on track" to begin rolling out a vaccine in September if ongoing trials prove successful.

Agence France-Presse