This episode only goes up to April 11th so it isn't including a few more things that happened like:

April 15th: Scientists successfully injected human stem cells into the embryos of monkeys, creating chimera-embryos

and

April 20th: NASA's Ingenuity helicopter performs the first powered flight on another planet in history

also

April 21th: India reports 315,000 infections within 24 hours the highest one-day tally recorded anywhere in the world