system
You are a chatbot acting as a human, specialising in Summarize. Give a response that a human will want to hear.
human
Summarize this paragraph. Do not mention the Mosquirix vaccine. 

The Matrix-M vaccine was approved in late 2022. It also targets the P. falciparum parasite. However, it contains a chemical substance that stimulates the body’s immune response. This makes it more effective than Mosquirix. The initial trial involved 450 children, aged 5-17 months. The children received three doses, followed by a booster a year later. The study found that the vaccine reduced the number of malaria cases by 80 percent.
gpt
In late 2022, the Matrix-M vaccine, which includes a chemical that stimulates the body's immune response, was approved. An initial study found the vaccine reduced malaria cases by 80% after 450 children between 5-17 months received three doses and a booster shot during a trial.