As the COVID-19 pandemic erupted and respiratory viruses raged, health officials in Colorado and Minnesota recorded an unusual spike in deadly and invasive infections. Streptococcus According to a study released this week by the Centers for Disease Control and Prevention, late last year the bacterium.
This surge, another oddity of post-pandemic disease transmission, points to a simple prevention strategy: flu vaccination.
The infection is invasive group A streptococcus, or iGAS for short, and is caused by the same group of bacteria that cause relatively mild illnesses such as strep throat and scarlet fever. However, iGAS occurs when bacteria spread through the body and cause serious infections such as necrotizing fasciitis (cannibalism), toxic shock syndrome, and sepsis. These conditions develop rapidly and can be fatal.
iGAS is usually rare. However, several countries have seen extraordinary increases in the disruptive aftermath of the pandemic. In December, the World Health Organization noted that five European countries were reporting an unusual increase in cases, along with a high number of deaths. Includes the UK, which saw at least 285 deaths (29 in children under 10) in the UK during the 2023 iGAS wave. Her other four European countries are France, Ireland, Holland and Sweden.
The CDC is also noting an unusually high and early rise in iGAS cases in children by the end of 2022. In a new study, local health officials report surveillance site data for the Denver metropolitan area and Minnesota. Between 1 October 2022 and her 31 December 2022, her iGAS cases of 34 of her children, including 2 of her deaths, occurred from 2 surveillance sites. This is a jump from the pre-pandemic era, but not from the cases seen during the height of the pandemic, when incidence was unusually low. In the same he three months (2016-2019) before the pandemic, the two sites averaged just 11 total cases. But from 2020 to 2021, the average was just 4 amid pandemic mitigation efforts. From 2016 to 2021, there were a total of 5 deaths from her iGAS.
Officials found that the 2022 uptick does not appear to be related to unusual strains of Strep A or resistance to new drugs. Respiratory syncytial virus) was emphasized.
deadly link
This is not surprising, as group A streptococci are known to piggyback viral infections. Historically, researchers have linked group A streptococci to the spread of chickenpox. Chickenpox vaccination has also been shown to reduce the incidence of group A streptococcal infections in children. I am paying attention to the fact that
It is unclear why some viral infections are associated with group A streptococci. As Ars previously reported, researchers believe factors such as timing overlap in the disease circulation, similar routes of transmission (such as respiratory), and the general age of the victim may be involved. I am hypothesizing that there is. Some viral infections may also use the same methods as streptococci to suppress the human immune response and initiate infection. This chain of viruses and bacteria can be seen elsewhere.Before vaccination campaigns, waves of measles virus were closely associated with increases in pertussis caused by bacteria Bordetella pertussisMeasles is known to broadly dampen immune responses, described by some researchers as “immune amnesia.”
With the unusual rise in iGAS this season, health officials have suggested that waves of influenza and RSV may have enabled the spread of germs and possible illness. Case reports show a close relationship between the spread of the virus and cases of iGAS, not only in the last year, but in the past few years. Previous studies also found that respiratory viruses and influenza, in particular, may increase the risk of iGAS. Of his 34 iGAS cases in 2022, 15 had tested positive for one or more viral infections during or before his iGAS cases, 6 of whom had influenza, 6 One was his RSV and three were his SARS-CoV-2. (It is unclear how many of the 34 children were tested for the virus; only positive results were reported.)
“Increased respiratory virus activity and decreased exposure to [group A strep] and development of protective immunity against related commons [strep A] During the COVID-19 pandemic, mold may have made children more susceptible to iGAS infection when pandemic restrictions were lifted,” the authors concluded. However, the findings suggest possible preventive strategies. for vaccination against chickenpox,” they wrote.
A vaccine against RSV is not yet available, but several are in development.
