Pfizer was founded in 1849 and has a history of more than 70 years. Headquartered in new york, USA, it is a scientific, innovative and patient-centered biopharmaceutical company. Pfizer's goal is to "bring breakthrough innovations that change patients' lives".
Pfizer's business in China covers more than 300 cities in China, and it has listed high-quality innovative drugs in five fields, including prescription drugs and vaccines in the fields of tumor, vaccine, anti-infection, inflammation and immunity, and rare diseases. Over the years, Pfizer has always been committed to "becoming an important part of China's medical and health system", making use of global medical resources and cooperating with all sectors of society to actively promote the health cause in China.
Effectiveness study:
202165438+On February 8th, CNN reported that Pfizer and BioNTech issued a statement saying that according to the preliminary experimental results, two doses of Pfizer COVID-19 vaccine can prevent serious diseases caused by Omicron, but three doses of vaccine can increase the antibody level by 25 times.
In 2022, it was reported that Pfizer had begun to test the third dose of vaccine for children under 5 years old, but it will take some time to complete, and the data is expected to be released in early April.