Many corona viruses are strongly dependent on the season, what does this mean for us?
Before us in the Corona pandemic, the worst of it yet? Of the seven, corona viruses, which infect regular people, are the cause of four common respiratory infections, which are highly seasonal and apparently similar to a flu to be transmitted. How does the Coronavirus SARS-CoV-2? We must now expect in the coming autumn or Winter much more people suffer from COVID-19?
In a recent study by the University of Michigan School of Public Health was trying to find out, whether the Coronavirus is SARS-CoV-2 seasonal could still accept worse effects. The results of the study were published in the English journal “the Journal of Infectious Diseases”.
Is SARS occur-CoV-2 seasonally stronger?
Even if seasonal corona are closely related to the virus SARS-CoV-2, is not known whether this Virus is acting just like the seasonal corona virus. Time will tell whether or not SARS-CoV-appearance 2 seasonally stronger.
Dangers of different corona viruses
Corona viruses are already for a long time as the causative agent of human respiratory disease known. Human corona virus have been detected in the past in mild respiratory disease. If animal corona spread viruses to the people, they can cause serious diseases.
Was SARS-CoV-2 transmitted from animals to humans?
The severe acute respiratory syndrome (SARS) in 2002 and middle East respiratory syndrome (MERS) in 2012, both of which occurred as a Coronavirus from animals to humans has been transferred. It is assumed that the COVID-19 pandemic has started in the same way, report the researchers.
A more recent study already showed that the Coronavirus by natural Evolution and Selection developed – most likely in bats. For more information read the article: Coronavirus-conspiracy disproved: SARS-CoV-2 was not created in the laboratory.
Four typical corona viruses were investigated
In 2010, the study with the investigation of the occurrence of four typical mild human coronaviruses (OC43, 229E, HKU1 and NL63) began. The researchers investigated the frequency, the seasonality and the transmission characteristics of the 993 by this corona virus infections caused in the house.
For the study, the data of the so-called Household Influenza Vaccine Evaluation Study were evaluated. This is an ongoing investigation of respiratory disease in households with children. In the last ten years, took part between 890 and 1.441 individuals from several hundred households in the study. The current study followed the Occurrence of SARS-CoV-2, and the potential to Occur in households in Michigan.
Cases of Corona reached in January and February, culminating
So, they found that a total of nine percent of the cases in adults and 20 percent of the cases in children were associated with visits to the doctor. An average of 30 percent of the influenza cases require a doctor’s visit. In the case of year-round Monitoring, most of the Coronavirus cases were detected between December and April/may. These cases reached their peak in January/February. Only 2.5 percent of the cases occurred between June and September.
Children and elderly patients more difficult
The highest infection frequency was found in children under five years of age. Of the 993 infections and 260 were acquired through an infected household contact. The serial interval between Index and household-acquired cases ranged from 3.2 to 3.6 days. The secondary risk of infection was between 7.2 percent and 12.6 percent. Cases in children under five years and adults over 50 years were more likely to be classified as difficult.
Behavior of SARS-CoV-2 is difficult to estimate
In Michigan investigated corona virus (not one of which SARS-CoV-2) were strongly season dependent. They seemed to be on the basis of the serial interval and the secondary infection risk to have similar transmission potential, such as Influenza A Virus (H3N2) in the study population. Nevertheless, the results of the analysis are not an indication of how SARS-CoV-2 behavior, report the researchers. It is to be hoped that a highlight of the current corona pandemic in the coming Winter will be spared. (as)