01. A positive IgM antibody against Mycoplasma pneumoniae indicates infection with Mycoplasma pneumoniae. IgM antibodies can be detected on the 7th day after Mycoplasma pneumoniae infection and symptoms appear. After 10-30 days, the concentration of IgM antibodies reaches its peak, and after 12-26 weeks, the titer of IgM antibodies gradually decreases until undetectable.
02. Adenovirus mainly causes respiratory infections, epidemic conjunctivitis (commonly known as red eye disease), viral gastroenteritis, acute hemorrhagic cystitis, etc. Among them, respiratory infections and red eye disease caused by adenovirus are the most common. In the first few days after infection, the virus content in feces is highest. The earliest appearance of anti-adenovirus specific IgM antibodies is about one week after onset, and they can last for 2-3 months.
03. Respiratory syncytial virus is one of the main influenza viruses, and epidemiological investigations of respiratory pathogens in some regions have shown that the positive rate of RSV can reach 11.58% to 36%. The disease is highly contagious and has a high infection rate in the population, with approximately 90% of adults being infected. Although RSV infection can produce antibodies with neutralizing and complement binding abilities, reinfection is still common. Anti respiratory syncytial virus specific IgM antibodies can appear as early as about one week after onset and persist for 2-3 months.
04. The Coxsackie virus CVB IgM antibody rapidly increases from the first week of the disease and decreases or disappears within 3-4 weeks. The appearance of its specific IgM antibody after COXB infection can serve as an important indicator of acute or persistent COXB infection. A positive test result mainly indicates COVID-19 infection, but the possibility of false positives cannot be ruled out.
Post time: Jan-23-2024