Bubonic plague, caused by Yersinia pestis, manifests 1-7 days post-exposure with flu-like symptoms: fever, headache, and vomiting. A hallmark symptom is swollen, painful lymph nodes (buboes) near the bacteria's entry point. Acral necrosis, skin darkening, can also occur. Buboes may rupture. It is one of the three forms of plague.
Between 1900 and 2015, the United States had 1,036 human plague cases.
From 1900 to 1904, the plague infected people in Chinatown in San Francisco.
In 1902, authorities made permanent the Chinese Exclusion Act.
From 1900 to 1904, the plague infected people in Chinatown in San Francisco.
From 1907 to 1909, the plague infected people in the locales of Oakland and the East Bay.
From 1907 to 1909, the plague infected people in the locales of Oakland and the East Bay.
In 1924, the last major outbreak in the United States occurred in Los Angeles.
In 1940, the Imperial Japanese Army Air Service bombed Ningbo with fleas carrying the bubonic plague.
In 1941, 40 members of Unit 731 air-dropped plague-contaminated fleas on Changde.
According to the World Health Organization, in 1959, the pandemic was considered active until worldwide casualties dropped to 200 per year.
In 1994, a plague outbreak in five Indian states caused an estimated 700 infections (including 52 deaths) and triggered a large migration of Indians within India as they tried to avoid the disease.
In 2003, targeted chemoprophylaxis, sanitation, and vector control played a role in controlling the Oran outbreak of the bubonic plague.
In 2010, globally there were 3,248 documented cases of the Bubonic plague.
From 2012 to 2017, Madagascar began to host regular epidemics of the Bubonic plague.
In 2013, archeologists in England uncovered a burial mound to reveal 17 bodies, mainly children, who had died of the Bubonic plague and dental core analysis revealed the presence of Yersinia pestis.
In 2015, 16 people in the western United States developed plague, including 2 cases in Yosemite National Park.
In 2015, globally there were 3,248 documented cases of the Bubonic plague resulting in 584 deaths.
In November 2017, the Madagascar Ministry of Health reported a plague outbreak to the WHO with more cases and deaths than any recent outbreak in the country, with most cases being pneumonic rather than bubonic.
From 2012 to 2017, Madagascar began to host regular epidemics of the Bubonic plague.
In June 2018, a child was confirmed to be the first person in Idaho to be infected by bubonic plague in nearly 30 years.
In May 2019, a couple died in Mongolia, while hunting marmots and contracted Bubonic Plague.
In November 2019, two people in the province of Inner Mongolia, China, were treated for Bubonic Plague.
In July 2020, in Bayannur, Inner Mongolia of China, a human case of bubonic plague was reported. Also in July 2020, in Mongolia, a teenager died from bubonic plague after consuming infected marmot meat.