1) Influenza starts suddenly with severe intoxication, high temperature, photophobia, severe headache, body pain. By the end of first day appears dry cough. In most favorable course of the disease patient's common condition and temperature get normalized during five days.
2) Infection caused by parainfluenza virus starts gradually, with no intoxication, temperature never goes beyond 38C. Parainfluenza viruses mainly affect throat. The disease shows with symptoms of acute laryngitis (hoarseness of voice, dry cough).
3) Rhinovirus infection is characterized with nose hydrorrhea on the back of slightly frank symptoms of intoxication. Also patients suffer from tearing, frequent sneezing, no signs of affecting of trachea and bronchi. Temperature of the body is usually normal, in some cases it rises to 37-37,4°ะก.
4) Adenovirus infection is caused by viruses that affect not just epithelium of respiratory tract but also lymphoid tissue. That is why besides symptoms of musous affection (nose hydrorrhea, unsymmetrical conjunctivitis, moderate cough on third day, fever on 8 – 12 day) are noticed increase of lymph glands, increased liver and spleen, abdomen pains. Despite high temperature, intoxication is not noticed.
5) Respiratory syncytial infection is characterized with affection of lower respiratory tract and has the same symptoms as bronchitis. Catarrhal syndrome is not significantly frank.
6) Coronaviral infection often affects upper respiratory tract. Clinical picture is similar to rhinovirus infection. Most frequently it affects children.
How to diagnose ARVI?
In order to make diagnosis it is necessary to make analysis of epidemical situation, symptoms, nature of cough, spit and nose mucus. To detect the agent it is necessary to make analysis that helps to detect viruses antigens due to immunofluorescence test.
