The truth about adenovirus infection: it can occur in any season, with infants and young children being the most common
If you have a sore throat, runny nose, red eyes, excessive eye discharge, tonsil discharge... Loose stools, abdominal pain, vomiting... Adenovirus infection should be considered. #How to Prevent Respiratory Infections#
Adenovirus infection can occur in any season, and respiratory symptoms are more common in winter and spring, and are susceptible to all ages, with infants and young children being the most common. The infectious agent is "human adenovirus" (HAdV), which is divided into 7 subgenera and at least more than 100 subtypes, and different subtypes show different tissue and organ tropism, which can infect the respiratory tract, digestive tract, urinary tract, cornea and other parts, causing different systemic diseases.
Acute upper respiratory tract infections caused by respiratory adenovirus infections account for about 5%-10% of pediatric respiratory tract infectious diseases. The respiratory adenoviruses circulating in mainland China are mainly types 3, 5 and 7. The upper sensation caused by adenovirus can only be mild symptoms such as sore throat and runny nose. Tonsillitis and lichen changes of the tonsils are more common due to adenovirus infection than those caused by streptococcal infection.
Globally, type 3 is the common serotype that causes adenovirus infection in children and adults. Type 3 infection is characterized by pharyngeal conjunctivitis (bloodshot eye with discharge, pharyngeal congestion tonsillitis, cervical lymphadenitis, and fever), which can be characterized by elevated white blood cells, neutrophils, and mildly to moderately elevated C-reactive protein, which can easily be mistaken for bacterial infection.
Acute gastroenteritis caused by enteric adenovirus infection is second only to rotavirus and norovirus. The enterovirus circulating in mainland China is mainly type 41. The feces of children with adenovirus enteritis are mainly loose stools and watery stools, and the detection rate of white blood cells and occult blood in the feces is higher than that of rotavirus enteritis.
In addition, type 8 is the main causative agent that causes epidemic conjunctivitis.
Adenovirus is highly contagious and is mainly transmitted by droplets, contact (touching an object or surface with adenovirus on it and then touching the mouth, nose or eyes before washing hands), or through fecal-oral transmission.
Adenovirus is insensitive to common disinfectants such as ether and chloroform, and has strong resistance to physical and chemical factors, and can survive for about 10 days at room temperature. The surface of the items can be disinfected with 1000mg/L chlorine-containing disinfectant and 3% hydrogen peroxide solution, the classroom environment can be disinfected with ultraviolet radiation for 30 minutes, and some items can be heated at 56 degrees Celsius for 30 minutes.
The first way to prevent adenovirus infection is to wash your hands frequently and avoid touching your eyes, nose or mouth with unwashed hands. Also, pay attention to cough etiquette and avoid sharing items.
Symptoms of adenovirus infection are usually mild, antiviral drugs are not needed, and antibiotics are ineffective, as long as symptomatic care (care is only aimed at relieving symptoms).
For fever and sore throat, antipyretic and analgesic drugs such as acetaminophen and ibuprofen can be used;
For diarrhoea and vomiting, it is important to maintain a diet as much as possible to prevent dehydration;
For conjunctivitis caused by adenovirus infection, because most of the symptoms are mild, no special treatment is required, and it can be resolved spontaneously in 1-2 weeks.
Because there is no cross-immunity between the different serotypes, recurrent adenovirus infections can occur.