There are 2 books in the The Andromeda Strain series. The newest book is The Andromeda Evolution which came out in 2019.

From the author of Jurassic Park, Timeline, and Sphere comes a captivating thriller about a deadly extraterrestrial microorganism, which threatens to annihilate human life.
 
Five prominent biophysicists have warned the United States government that sterilization procedures for returning space probes may be inadequate to guarantee uncontaminated re-entry to the atmosphere.…

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The Andromeda Evolution

Book cover of The Andromeda Evolution

Fifty years after The Andromeda Strain made Michael Crichton a household name - and spawned a new genre, the technothriller - the threat returns, in a gripping sequel that is terrifyingly realistic and resonant.

THE EVOLUTION IS COMING

In 1967, an extraterrestrial microbe - designated the Andromeda Strain - came…