Influenza A/B Antigens: 19.53 HA/ml for Influenza A (H1N1), 20.02 HA/ml for Influenza A (H3N2), 5.78 HA/ml for Influenza B (HongKong/5/72). SARS-CoV-2 Antigen: 2.87 x 10 3 TCID 50/ml (heat-inactivated SARS-CoV-2 culture fluid). Influenza B: 98.4% sensitivity (61/62) and 94.8% specificity (217/229).Ģ91 patients’ samples were collected under IRB regulations and tested with the Influenza / COVID-19 Antigen Rapid Test Kit, with results confirmed with a RT-PCR kit (Korean FDA-EUA approved). SARS-CoV-2: 90% sensitivity (27/30) and > 98% specificity (98/100).ġ30 patients’ samples were collected under IRB regulations and tested with the Influenza / COVID-19 Antigen Rapid Test Kit, with results confirmed with a RT-PCR kit (Korean FDA-EUA approved). This limited host and range is apparently responsible for the lack of Influenza virus B-caused influenza pandemics in contrast with those caused by the morphologically similar Influenza virus A as both mutate by both antigenic drift and reassortment. Influenza B viruses are only known to infect humans and seals, giving them influenza. The only species in this genus is called Influenza B virus. Influenza virus B is a genus in the virus family Orthomyxoviridae. There are 18 different known H antigens (H1 to H18) and 11 different known N antigens (N1 to N11). The several subtypes are labelled according to an H number (for the type of hemagglutinin) and an N number (for the type of neuraminidase). Influenza A viruses are negative-sense, single-stranded, segmented RNA viruses. Death occurs mostly in the young, the old, and those with other health problems. Influenza spreads around the world in a yearly outbreak, resulting in about three to five million cases of severe illness and about 250,000 to 500,000 deaths. The infection may be confirmed by testing the throat, sputum, or nose for the virus. A person may be infectious to others both before and during the time they are showing symptoms. It can also be spread by touching surfaces contaminated by the virus and then touching the mouth or eyes. Usually, the virus is spread through the air from coughs or sneezes this is believed to occur mostly over relatively short distances. Type D has not been known to infect people, but is believed to have the potential to do so. Three of the four types of influenza viruses affect people, Type A, Type B, and Type C. Complications of influenza may include viral pneumonia, secondary bacterial pneumonia, sinus infections, and worsening of previous health problems such as asthma or heart failure. In children, there may be diarrhoea and vomiting, but these are not common in adults. The cough, however, may last for more than two weeks. These symptoms typically begin two days after exposure to the virus and most last less than a week. The most common symptoms include: high fever, runny nose, sore throat, muscle pains, headache, coughing, sneezing, and feeling tired. Influenza, commonly known as "the flu", is an infectious disease caused by an influenza virus. Rapid antigen diagnostic test kits have now been developed, such as this Influenza / COVID-19 Antigen Rapid Test Kit. The infection can also be diagnosed from a combination of symptoms, risk factors, and a chest CT scan showing features of pneumonia. Antibody assays can also be used, using a blood serum sample, with results within a few days. The standard method of diagnosis is by reverse transcription polymerase chain reaction (rRT-PCR) from a nasopharyngeal swab or sputum sample, with results within a few hours to 2 days. Time from exposure to onset of symptoms is generally between 2 and 14 days, with an average of 5 days. The infection is spread from one person to others via respiratory droplets produced from the airways, often during coughing or sneezing. Cases can progress to pneumonia and multi-organ failure. A sore throat, runny nose, or sneezing is less common. Those affected may develop a fever, dry cough, fatigue, and shortness of breath. It is contagious in humans and is the cause of the ongoing coronavirus outbreak, an epidemic of coronavirus disease 2019 (COVID-19) that has been designated a Public Health Emergency of International Concern by the World Health Organization (WHO). Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), previously known by the provisional name 2019 novel coronavirus (2019-nCoV), is a positive-sense single-stranded RNA virus, which is closely related to the SARS virus.
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