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In the fight against the new coronavirus disease (COVID-19), it’s important to move fast. Some of the world’s best scientists are looking for a vaccine, a drug that teaches your body how to fight an infection before you even get it. However, making a new vaccine is a very big task.

It takes a lot of information to make a human. It’s kept in our cells as DNA, which contains at least 20 000 genes. Some other forms of life can get by with much less DNA and fewer genes. Now one team of scientists think they’re close to making the simplest living thing possible.