The Quest for the Lost 1918 Flu Virus

The Scientific Mystery of the 1918 Flu

The 1918 influenza pandemic remains one of the deadliest events in human history, claiming an estimated 100 million lives. For decades, the exact nature of the virus remained a mystery because it vanished before scientists could identify its structure.

• The virus was invisible to contemporary science, as microscopes of the era could not resolve such tiny pathogens.
• Without a live sample, researchers were unable to study the virus, leaving fundamental questions about its origin and lethality unanswered for over 70 years.

The Adventurer: Johan Hultin

In 1951, a Swedish graduate student named Johan Hultin embarked on a daring mission to solve this scientific riddle. His hypothesis was that bodies buried in the permafrost of Alaska might contain lung tissue with the virus still preserved in suspended animation.

The Expedition to Brevig Mission

• Hultin traveled to the remote village of Brevig Mission, where a mass grave held 72 victims of the 1918 pandemic.
• With community permission, he excavated the site and successfully retrieved lung tissue samples from a perfectly preserved 12-year-old girl.
• To preserve the samples during transit, Hultin ingeniously used carbon dioxide from dozens of fire extinguishers to keep the tissue frozen.

The Setback

"The virus that I was looking for was dead."

Despite his efforts, the samples were effectively sterile. The virus could not be grown in lab animals, and, at the time, science lacked the genetic tools to study degraded, 'dead' viral material. The project was categorized as a failure, and Hultin shifted his career to medicine.

The Genetic Breakthrough

Decades later, in the 1990s, genetic technology finally caught up. Jeffrey Taubenberger and Ann Reid at the Armed Forces Institute of Pathology began successfully sequencing pieces of the 1918 virus from paraffin-embedded samples.

• Hultin, now retired and living in California, saw their research in a magazine and contacted them.
• In his 70s, Hultin returned to Alaska to reopen the grave, finding new samples ('Lucy') that were sent to Taubenberger's lab.
• By 2005, the team successfully reconstructed the entire 1918 genome.

Lasting Impact

The completed sequence revealed that the virus originated in birds and did not truly vanish, but instead mutated into the seasonal influenza strains that persist today. This research has been vital for developing future vaccines and understanding pandemic pathology.