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Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Whooping cough (/ ˈ h uː p ɪ ŋ / or / ˈ w uː p ɪ ŋ /), also known as pertussis or the 100-day cough, is a highly contagious, vaccine-preventable bacterial disease. [1] [10] Initial symptoms are usually similar to those of the common cold with a runny nose, fever, and mild cough, but these are followed by two or three months of severe coughing fits. [1]
In 2024, there have been 16,375 recorded cases of pertussis, compared to 3,771 cases at this time last year. Certain states are having more outbreaks than others: Pennsylvania and Illinois have ...
Only four cases of the illness commonly known as whooping cough were reported in the county from 2020-23. Erie County reports 15 pertussis cases, largest outbreak in at least six years Skip to ...
Whooping cough gets its name because people may make a high-pitched "whoop" sound when they inhale after a coughing fit. The coughing can be so bad that people vomit during or after the coughing ...
Bordetella pertussis is a Gram-negative, aerobic, pathogenic, encapsulated coccobacillus bacterium of the genus Bordetella, and the causative agent of pertussis or whooping cough. Its virulence factors include pertussis toxin , adenylate cyclase toxin , filamentous haemagglutinin , pertactin , fimbria , and tracheal cytotoxin .
Like many respiratory illnesses, whooping cough cases dropped to low levels during the pandemic as people limited social interactions and took other precautions to defend against Covid-19.
In 1978 there were over 65,000 notifications and 12 deaths (see the chart of pertussis notifications). These two major epidemics illustrate the impact of a fall in coverage of an effective vaccine. The actual number of deaths due to these pertussis outbreaks was higher since not all cases in infants are recognised. [16]