The United Kingdom has approved the use of coronavirus vaccines invented by scientists at the drug companies AstraZeneca and Oxford University.

Meanwhile, the UK manufacturer has ordered 100 million doses from AstraZeneca, which will be available to 50 million people.

The British government has identified the approval of the vaccine as a major turning point, saying it would lead to a massive expansion of the UK's vaccination campaign, which would bring life back to normal. Also, the vaccine is safe and effective.

Meanwhile, Pfizer, Moderna and AstraZeneca - three manufacturers have forecast to distribute 530 crore vaccines by 2021. Due to high demand, there is uncertainty about whether vaccines will be available in low-income developing countries until 2023 or 2024.