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As you dive into your New Year’s resolutions, taking precautions to protect yourself from a quartet of infectious diseases can lessen your odds of starting off 2025 sick.
Smallpox is the first disease, and so far the only infectious disease of humans, to be eradicated by deliberate intervention. [6] It became the first disease for which there was an effective vaccine in 1798 when Edward Jenner showed the protective effect of inoculation (vaccination) of humans with material from cowpox lesions. [10]
The influenza virus spreads easily in the Northern Hemisphere winter due to climate conditions that favour the infectiousness of the virus. [27] Isolated weather events decrease the concentration of airborne fungal spores; a few days later, number of spores increases exponentially. [36] Socioeconomics has a minor role in airborne disease ...
[21] [22] According to the World Health Organization, approximately 10 million new TB infections occur every year, and 1.5 million people die from it each year – making it the world's top infectious killer (before COVID-19 pandemic). [21] However, there is a lack of sources which describe major TB epidemics with definite time spans and death ...
According to the CDC, some infants and people with immunocompromise could keep spreading the virus for as long as four weeks after they stop having symptoms. As for the common cold, there are over ...
For instance, people with severe cases of viral pneumonia – caused by viruses like the flu, RSV or SARS-CoV-2 – also often end up with a bacterial infection in the lungs or sinuses.
In a typical year, influenza viruses infect 5–15% of the global population, [3] [62] causing 3–5 million cases of severe illness annually [1] [2] and accounting for 290,000–650,000 deaths each year due to respiratory illness. [3] [4] [67] 5–10% of adults and 20–30% of children contract influenza each year. [23]
Before the pandemic, cases would show up in late summer in an every-other-year pattern. Had that pattern continued during Covid, doctors would have expected a rise in 2021.