An infection is the invasion of tissues by pathogens, their multiplication, and the reaction of host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmissible disease or communicable disease, is an illness resulting from an infection.
Infections can be caused by a wide range of pathogens, most prominently bacteria and viruses. Hosts can fight infections using their immune system. Mammalian hosts react to infections with an innate response, often involving inflammation, followed by an adaptive response.
Specific medications used to treat infections include antibiotics, antivirals, antifungals, antiprotozoals, and antihelminthics. Infectious diseases resulted in 9.2 million deaths in 2013 (about 17% of all deaths). The branch of medicine that focuses on infections is referred to as infectious diseases.
For some, the ringing might subside in a few weeks as the inflammation from the infection diminishes, and the ear heals. Others may continue to notice their tinnitus for months or even years in rare cases. Several factors can affect the length of time the tinnitus lasts.
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TOPLINE
Covid vaccines from companies like Pfizer, Moderna and AstraZeneca were linked to rare occurrences of heart, brain and blood disorders, a recent peer-reviewed study found, though experts say the risks of developing Covid-19 greatly outweigh the risks of getting vaccinated.
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