By CDC/ Harvard University, Dr. Gary Alpert; Dr. Harold Harlan; Richard Pollack. Photo Credit: Piotr Naskrecki (http://phil.cdc.gov/phil) [Public domain], via Wikimedia Commons
By CDC/ Harvard University, Dr. Gary Alpert; Dr. Harold Harlan; Richard Pollack. Photo Credit: Piotr Naskrecki (http://phil.cdc.gov/phil) [Public domain], via Wikimedia Commons