SARS-CoV-2 is an enveloped, single-stranded RNA virus of the β genus. COVID-19 is an acute respiratory infectious disease. People are generally susceptible. Currently, the patients infected by the COVID-19 are the main source of infection; asymptomatic infected people can also be an infectious source. Based on the current epidemiological investigation, the incubation period is 1 to 14 days, mostly 3 to 7 days. The main manifestations include fever, fatigue and dry cough. Nasal congestion, runny nose, sore throat, myalgia and diarrhea are found in a few cases. Clinical signs and symptoms of respiratory viral infection due to COVID-19 and influenza can be similar. Once infected with the SARS-CoV-2 virus, the patient may be hospitalized and some complications may occur. The virus may even lead to death for patients if prompt treatment is not received.
Influenza (commonly known as ‘flu’) is a highly contagious, acute viral infection of the respiratory tract. It is a communicable disease easily transmitted through the coughing and sneezing of aerosolized droplets containing live virus. Influenza outbreaks occur each year during the fall and winter months. Three types of influenza viruses affect people, called Type A, Type B, and Type C. Type A viruses are typically more prevalent than type B viruses and are associated with most serious influenza epidemics, while type B infections are usually milder. Along with the common cold, influenza is one of the most common acute respiratory infections. It produces symptoms such as headache, chills, dry cough, body aches and fever. The symptoms of the patient are so diverse.
RSV (Respiratory syncytial virus) is a syncytial virus that causes highly contagious and acute vira l infection of the respiratory tract . The virus is transmitted from person to person via close contact , droplets, or fomites . In temperate climates there is an annual epidemic during the winter months. Respiratory Syncytial Virus (RSV), which causes infection of the lungs and breathing passages, is a major cause of respiratory illness in young children.In adults, it may only produce symptoms of a common cold, such as a stuffy or runny nose, sore throat, mild headache, cough, fever, and a general feeling of being ill. But in premature babies and kids with diseases that affect the lungs, heart, or immune system, RSV infections can lead to other more serious illnesses. Respiratory illness caused by RSV — such as bronchiolitis or pneumonia — usually lasts about a week, but some cases may last several weeks.
Mycoplasma Pneumoniae most commonly causes upper respiratory tract infections, but can also cause pneumonia. Mycoplasma is found in the throat of infected persons and is spread to other people through the air by sneezing or coughing. MP infections generally do not exhibit severe shortness of breath, high fever, or productive cough. Instead, patients commonly experience low-grade fever, dry cough, mild shortness of breath (especially during physical activity), and fatigue. The identification of the M. pneumoniae will help the management of the disease with appropriate antibiotic treatment. The MP Rapid Test Kit is intended to detect M.pneumoniae antigen qualitatively. Because this one-step M. pneumoniae rapid test is easy to carry out, it is widely used as a screening test device and as an aid in the diagnostics of M. pneumoniae disease.
Adenoviruses have been implicated in a wide range of clinical diseases affecting mainly the respiratory, ocular and the gastrointestinal systems of the human. There are 47 serotype of Adenovirus, causing different diseases from conjunctivitis, bronchitis, pneumonia, gastroenteritis, cystitis and other symptoms. The symptoms of respiratory diseases caused by adenovirus are similar to the common cold symptoms in the early stage of pneumonia, pseudomembranous laryngitis and bronchitis. Patients with immune dysfunction are particularly vulnerable to serious complications of adenovirus infection. Adenovirus is transmitted through direct contact, fece-oral route and occasionally through water. Some types will cause tonsils, tonsillar hypertrophy and long-term asymptomatic after intestinal infection, which will last for several months or years.
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