First in line to roll up their sleeves were Tokyo medical workers, including 37 year old nurse Junco Hasegawa.

I was a bit nervous as I work in a place which has a higher risk of infection.

By getting vaccinated, I think I can work with a little more reassurance.

But Japan faces a big hurdle.

A shortage off syringes meaning millions off Pfizer bio and tech vaccines could go to waste.

The government made urgent request to manufacturers, but they're struggling to ramp up production.

It's the latest headache for Prime Minister Yoshihide Suga, who was struggling to win public support.

He's trying to defy the odds by pushing ahead with the Tokyo Olympics, set to start this July.

Though daily cases Aaron Decline, Tokyo and several prefectures remain in a state of emergency.

To stop the virus from spreading, Japan has signed contracts to get a combined total off 314 million doses from Pfizer, AstraZeneca and Madonna, more than enough for their population.

Still, a complete vaccine roll out for millions of medical staff and tens of millions of people aged 65 above could take more than a year, many months beyond the Olympic timeline.