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Digiscoping waterfowl Typical uncropped digiscope image; the spotting scope has 20x magnification. Camera focal length is 24 mm; distance to the subject is about 90 meters. Digiscoping is a neologism for afocal photography, using a camera to record distant images through the eyepiece of an optical telescope.
The term aseptic meningitis refers to cases of meningitis in which no bacterial infection can be demonstrated. This type of meningitis is usually caused by viruses, but it may be due to bacterial infection that has already been partially treated, when bacteria disappear from the meninges, or when pathogens infect a space adjacent to the ...
Viral meningitis, also known as aseptic meningitis, is a type of meningitis due to a viral infection. It results in inflammation of the meninges (the membranes covering the brain and spinal cord). Symptoms commonly include headache, fever, sensitivity to light and neck stiffness. [1] Viruses are the most common cause of aseptic meningitis.
Meningococcal meningitis is a form of bacterial meningitis. Meningitis is a disease caused by inflammation and irritation of the meninges, the membranes surrounding the brain and spinal cord. In meningococcal meningitis this is caused by the bacteria invading the cerebrospinal fluid and circulating through the central nervous system. Sub ...
[6] [7] Suspicion of meningitis is a medical emergency and immediate medical assessment is recommended. Current guidance in the United Kingdom is that if a case of meningococcal meningitis or septicaemia (infection of the blood) is suspected, intravenous antibiotics should be given and the ill person admitted to the hospital. [8]
Some of the possible symptoms of chronic meningitis (due to any cause) include headache, nausea and vomiting, fever, and visual impairment. Nuchal rigidity (or neck stiffness with discomfort in trying to move the neck), a classic symptom in acute meningitis, was seen in only 45% of cases of chronic meningitis with the sign being even more rare in non-infectious causes.
Additionally, the probability of developing aseptic meningitis increases when patients have a case of mumps or herpes. [2] Symptoms of meningitis caused by an acute viral infection last between one and two weeks. When aseptic meningitis is caused by cytomegalovirus 20 percent of individuals face mortality or morbidity. If left untreated it can ...
When looking at the most common causes of meningitis, 8.3% are due to herpes simplex virus. [8] HSV-2 specifically is the most common cause of meningitis in adults. [6] Herpesviral meningitis primarily affects people aged 35–40, the elderly, and women. [9] Between 20% and 50% of cases have clinical recurrences. [3]