Hunting for the Hidden Killers: AIDS

Disease detectives face a never ending quest

They could not afford to jump to conclusions—any conclusions. Their only hope was to be grindingly, interminably thorough. Otherwise, they could pursue a course of investigation for hours or days, only to find it ended nowhere.

—The Andromeda Strain by Michael Crichton

The enemy is always time—an agonizing reminder of the suffering that can result from staying one step behind an elusive killer. At the outset of each new inquiry, they may not even know the description of their quarry, but its power is often all too evident. Along...

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