Influenza A/H1N1 is highly contagious and can cause an epidemic, but we often confuse it with the common flu. If not treated promptly, it can lead to many dangerous complications, even death. Let's learn how to recognize and prevent this disease!

In February 1957, a new influenza A (H2N2) virus emerged in East Asia, causing a pandemic in Asia. The first cases were reported in Singapore in February 1957, Hong Kong in April 1957, and in coastal cities in the United States in the summer of 1957. The estimated death toll was 1.1 million worldwide and 116,000 in the United States.