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The recent news of Pfizer`s agreement with the US government has been making waves in the healthcare industry. The pharmaceutical giant has reached a deal to supply 100 million doses of its COVID-19 vaccine to the country, with an option to purchase an additional 500 million doses.

This agreement is a significant win for both Pfizer and the US government. For Pfizer, it means a guaranteed market for its vaccine and a source of revenue at a time when the company is experiencing a decline in demand for some of its other products. For the US government, it means access to a vaccine that has shown promising results in clinical trials and could help bring an end to the COVID-19 pandemic.

The Pfizer-BioNTech vaccine has been shown to be 95% effective in preventing COVID-19 in clinical trials. It is based on mRNA technology, which uses a small piece of genetic material to teach cells how to make a protein that triggers an immune response. This response helps the body to recognize and fight the virus if it is encountered later on.

The vaccine has already been approved for emergency use in a number of countries, including the UK, Canada, and the US. It has also been approved by the European Medicines Agency (EMA) for use in the European Union. The Pfizer-BioNTech vaccine requires two doses, administered 21 days apart.

One of the challenges of distributing the Pfizer-BioNTech vaccine is its extremely cold storage requirements. The vaccine must be stored at a temperature of -70 degrees Celsius (-94 degrees Fahrenheit) until it is ready to be used. This has led to concerns about how the vaccine will be transported and distributed to remote areas without access to such specialized storage facilities.

Despite these challenges, the Pfizer-BioNTech vaccine is seen as a critical tool in the fight against COVID-19. The US government`s agreement with Pfizer ensures that the vaccine will be available to millions of Americans in the coming months. The hope is that widespread vaccination will help to curb the spread of the virus, reduce the number of hospitalizations and deaths, and ultimately bring an end to the pandemic.