Influenza

Because Carlo knew that the earliest influenza outbreak had erupted in the spring of 1918, in both the United States and France.

For that reason, Carlo had dispatched Royal Security Intelligence Agency operatives long ago to keep a close watch on developments in the United States and France.

The moment they uncovered any signs of influenza in the United States or France, they were to immediately collect relevant data and determine the routes through which the disease spread.

This would not only ensure that the Great Flu in this world would no longer be named after Spain, but also ensure that when influenza broke out, Carlo and Spain would have enough time to respond in advance, rather than being caught scrambling after the outbreak and allowing it to spread across a wider area.

The facts proved that sending out intelligence operatives in advance had indeed been highly effective.

As time reached March 1918, Cadil of the Royal Security Intelligence Agency brought Carlo a piece of news that made him rise to his feet in shock.

"Your Majesty, according to reports sent back by our operatives, the day before yesterday—March 4—a large-scale influenza outbreak occurred at a Kansas military camp in the United States. At least dozens of American soldiers have been infected.

"The symptoms of these infected American soldiers are mainly headaches, high fever, muscle aches, and loss of appetite. They are closely connected to the Great Flu Your Majesty mentioned.

"One of our operatives disguised himself as a doctor and entered the camp to examine those American soldiers. Based on the data from his diagnosis, it can currently be confirmed that this is at least an extremely contagious cold, carrying an enormous risk of transmission." The Director of the Royal Security Intelligence Agency, Cadil, spoke with a grave expression.