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Despite the high morbidity and mortality rates that resulted from the epidemic, the Spanish flu began to fade from public awareness over the decades until the arrival of news about bird flu and other pandemics in the 1990s and 2000s. [320] [321] This has led some historians to label the Spanish flu a "forgotten pandemic". [177]
The ability of various influenza strains to show species-selectivity is largely due to variation in the hemagglutinin genes. Genetic mutations in the hemagglutinin gene that cause single amino acid substitutions can significantly alter the ability of viral hemagglutinin proteins to bind to receptors on the surface of host cells.
Green and white sea glass. Sea glass are naturally weathered pieces of the anthropogenic glass fragments of typically drinkwares, which often have the appearance of tumbled stones. Sea glass is physically polished and chemically weathered glass found on beaches along bodies of salt water. These weathering processes produce natural frosted glass ...
The thin-glass bottles were probably made in England, Ard added, as the Spanish did not make their own glass. "Onion bottles are free blown using a pontil," Ard said. "Each one is unique, so there ...
Spanish sailors brought influenza to Central America. There are records of the New World eventually being reached by the flu in 1557, brought to the Spanish and Portuguese Empires by sailors from Europe. [21] Influenza arrived in Central America in 1557, [66] likely aboard Spanish ships sailing to New Spain.
The 1889–1890 pandemic, often referred to as the Asiatic flu [53] or Russian flu, killed about 1 million people [54] [55] out of a world population of about 1.5 billion. It was long believed to be caused by an influenza A subtype (most often H2N2), but recent analysis largely brought on by the 2002-2004 SARS outbreak and the COVID-19 pandemic ...
The history of glass-making dates back to at least 3,600 years ago in Mesopotamia. However, most writers claim that they may have been producing copies of glass objects from Egypt. [1] Other archaeological evidence suggests that the first true glass was made in coastal north Syria, Mesopotamia or Egypt. [2]
New artifacts have been found on the legendary Spanish galleon San Jose, Colombia's government announced Thursday, after the first robotic exploration of the three-century-old shipwreck.