Pfizer is commanding a higher price for its vaccine than some rivals
The announcement came as delays or production problems for the Pfizer-BioNTech vaccine and a vaccine from Britain''s AstraZeneca have caused political uproar across the European Union
The difficulty in obtaining that sixth dose in practice means many countries are at loggerheads with Pfizer and facing a drop in supply.
"We are already laying the groundwork to respond quickly if a variant of SARS-CoV-2 shows evidence of escaping immunity by our vaccine," Pfizer said in an email to Reuters
The guidance on Moderna came several weeks after issuing their recommendations on the rival Pfizer vaccine
The vaccine made by Pfizer and its German partner BioNTech , one of two authorized for U.S. emergency use, is shipped in vials initially indicated to hold five doses
Pfizer says its application is supported by data from a global study that shows an overall efficacy rate of 95% with no vaccine-related, serious safety concerns
While mass airlifting of vaccines is yet to begin, global deal-making shows many interesting trends
The availability of vaccines to lower-income countries and help bring a rapid end to the acute stage of the Covid-19 pandemic
The deal is expected to be announced on Friday, according to the sources, who declined to be named due to the confidentiality of the agreement
It was a similar situation in Poland which on Monday received 176,000 doses, a drop of around 50% from what was expected, authorities said
Pfizer told Italy last week that it was cutting its deliveries by 29%
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The new research tested all 10 mutations located on the virus's spike protein, which helps it bind to cells in the host
Proponents say the deal could allow Israel to become the first country to vaccinate most of its population, while providing valuable research that could help the rest of the world
Lebanon's caretaker health minister signed a final deal on Sunday to secure 2.1 million doses of Pfizer-BioNTech's Covid-19 vaccine as the country battles a steep rise in infections
China has slammed the US media for its silence over the deaths of 23 Norwegian elderly patients
Drug major clarifies it could not present itself before the SEC because of short notice and time zone issues
Ordinary vaccines tend to be inactivated or weakened viruses which, when injected into the body, stimulate an immune response that can later protect against the live pathogen
When the researchers tested the sera of 20 participants who received vaccine they found that it could act against the engineered coronavirus variants