Original sentence: " Questions were raised by other scientists including Marc Lipsitch of the T.Both groups had both serially passaged  H5N1 avian influenza in ferrets, manually taking the virus from one ferret to another, until it was capable of spreading via respiratory droplets.Chan School of Public Health at Harvard University about the relative risks of benefits of this research.In early 2011, two groups were investigating how flu viruses specific to birds could possibly cross over and create pandemics in humans: one led by Yoshihiro Kawaoka at University of Wisconsin in Madison, Wisconsin and another led by Ron Fouchier at Erasmus University Medical Center in the Netherlands.Others called the experiments an "engineered doomsday.The normally bird-specific virus, through replication over time in the ferrets' lungs, had adopted several amino acid changes that enabled it to replicate in the mammalian lungs, which are a notably colder than those found in birds.This research had several benefits: it answered the question of how a virus like H5N1 could possibly become airborne in humans, it allowed other researchers to develop vaccines and therapeutics which specifically targeted these amino acid changes, and it also demonstrated that there was a linkage between transmissibility in avian viruses and lethality: while the virus had become more transmissible, it had also become significantly less deadly.This small change also allowed the virus to transmit via droplets in the air made when the ferrets' coughed or sneezed.Various critics of the research (including members of Congress) responded to the publications  with alarm
Edited sentence: " A New York Times editorial described the event as "An Engineered Doomsday.In 2011, Ron Fouchier of the Erasmus University Medical Center in the Erasmus University Rotterdam and Yoshihiro Kawaoka of the University of Wisconsin in Madison and the University of Tokyo revealed that they had had modified the deadly avian H5N1 influenza virus to spread between ferrets in separate studies.In May 2012, a Japanese group of scientists operating out of the University of Wisconsin with funding from the Bill & Melinda Gates Foundation, ERATO, National Institute of Allergy and Infectious Diseases and support gifts from the National Institutes of Health and the Vietnamese National Institute of Hygiene and Epidemiology published a paper in the journal Nature about airborne transmission of the H5N1 bird flu introduced via respiratory droplet transmission from one ferret to another.That small change allowed the virus to be transmitted via coughing and sneezing, and it solved the riddle of how H5N1 could become airborne in humans... (Some) members of Congress, among other critics around the world, responded to the publication of the research with alarm and condemnation.The group "had altered the virus’s amino acid profile, allowing it to reproduce in mammal lungs, which are a bit colder than bird lungs.This study was a first for mammalian transmutability and sparked a debate in the scientific community about the biorisk implications of gain of function research