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The word influenza comes from the Italian word influenza, from medieval Latin influentia, originally meaning 'visitation' or 'influence'. Terms such as influenza di freddo , meaning 'influence of the cold', and influenza di stelle , meaning 'influence of the stars' are attested from the 14th century.
Influenza-like illness (ILI), also known as flu-like syndrome or flu-like symptoms, is a medical diagnosis of possible influenza or other illness causing a set of common symptoms. These include fever, shivering , chills , malaise , dry cough , loss of appetite , body aches, nausea , and sneezing typically in connection with a sudden onset of ...
The immune system mounts an acute effort to resolve the HIV infection during the seroconversion period. Following this period, the immune system temporarily contains the infection. The symptoms of seroconversion lessen and disappear in most people, with HIV entering a stage of clinical latency. At this stage, the infection remains within the ...
Flu shot immunity lasts about eight months, and by next year, the shot will have a new set of variants to reflect the evolving viruses. Like Covid-19 vaccines, flu vaccines are good at preventing ...
A 2021 study found the common flu vaccine provided immunity to the flu in 58% of recipients. [6] The measles vaccine fails to provide immunity to 2% of children that receive the vaccine. However, if herd immunity exists, it typically prevents individuals who are ineffectively vaccinated from contracting the disease. [ 7 ]
Denaturing the protein may 'disarm' its function but allow the immune system to have an immune response thus creating an immunity without harming the patient. Cross reactivity has implications for flu vaccination because of the large number of strains of flu, as antigens produced in response to one strain may confer protection to different ...
It takes about two weeks after getting the flu shot for your body to produce enough antibodies to be protected, so try to get your shot at least a few weeks before any big travel plans or crowded ...
A serotype or serovar is a distinct variation within a species of bacteria or virus or among immune cells of different individuals. These microorganisms , viruses, or cells are classified together based on their surface antigens , allowing the epidemiologic classification of organisms to a level below the species .