COVID-19 SYMPTOMS AND Variety of Omekron: What Recent Studies Reveal

The doctors are studying. The spread of omicron New clues have been found to the pattern of symptoms caused by the highly variable worldwide. COVID-19 The variant, about which a growing number of reports suggest that Delta may appear different and faster than the variant that is now becoming homeless.

Preliminary evidence suggests that in many patients, Omicron leads to a new trend Mild symptoms Which mostly affects the upper respiratory system – nose, mouth and throat – may help explain why this seems to be the case. Small individual risk Severe illness compared to hospitalization or the first strain of the virus, which often attacks the lungs.

“What is becoming clear is that Omicron has less of an effect on the lungs than before,” said Dr. Ronald Whelan, head of Discovery Health’s COVID-19 task team.

Whelan’s employer, South Africa’s largest health insurance company, issued one. Preliminary report Last month there on the Omicron wave. Their analysis revealed that sore throat was one of the most common early symptoms of Omecron, as well as congestion, dry cough and lower back pain. The incubation period – the time from infection to the onset of symptoms – was as short as three days. This is several days faster than the previous strain of the virus.

Dr. Angelique Kotzi, head of the South African Medical Association, echoed the whale’s observations about Omekron patients.

“Some people who develop pneumonia only start with shortness of breath, a feeling of fever and a mild cough around 10-12 days,” Kotzi said.

Most mild cases of omekron during the tide in South Africa were accompanied by headache, chest pain or back pain, “mild sore throat or dry cough and fatigue”.

South Africa’s National Institute of Communicable Diseases warns residents At the end of last month To keep an eye on this type of upper respiratory symptoms, and note that a specific symptom that first appears in various variants of COVID – loss of taste and smell – appears “unusual” with Omicron.

Investigations into the outbreak outside South Africa have led to similar trends.

An analysis of data compiled from positive case reports In LondonWhile the number of cases of Omekron has increased in the last month, the top five symptoms are considered to be runny nose, headache, fatigue, sneezing and sore throat.

Infected people, most of them vaccinated At a Christmas party in NorwayCoughing and runny nose appeared in more than three-quarters of the 81 cases. Only 12 reported a low odor and 23% reported a decrease in taste.

Outbreaks appear to be exacerbated during this time in the Nebraska family. Recent reports The Center for Disease Control and Prevention reports that no one reported a lack of taste or smell – compared to four during their first COVID-19 competition in 2020. Two had a recurrent fever. An additional non-vaccinated person, who had not previously been diagnosed with COVID-19, reported “coughing, joint pain, congestion, fever, and chills.”

In both epidemics, the incubation period averaged less than three days. Four to five days Seen with Delta variant.

Despite the fact that Omicron reduces the individual’s risk of serious illness, it is still contagious. Hospitals are struggling To handle Increasing case load. A consortium of disease predictors Warned on Tuesday That the United States is on the verge of hospitalization and beyond the worst days of the Delta Warrant of Deaths due to the sheer number of people catching the rapidly spreading tension.

Scientists have warned that the rapid rise of Omekron could be due to the spread of the virus by most people without any symptoms.

One the study Healthcare workers in South Africa, who have not yet been peer-reviewed, found that the rate of people carrying the disease without symptoms was 2.6% with Omicron during various beta and delta spreads. Has risen to 16%.

“These findings strongly suggest that Omecron has a much higher rate of non-symbolic vehicles than others. [variants of concern] And this high prevalence of asymptomatic infections is likely to be a major factor in the widespread, rapid spread of various types globally, “the study authors wrote.

More hints from humans and hamsters

Although the frequency of some symptoms may change with Omicron, doctors say there is no evidence of significantly different or new symptoms that Previous COVID-19 cases. Instead, scientists will need to figure out how Omicron has altered the symptoms of some symptoms more than others.

For example, loss of smell or taste – which doctors call “anosmia” and “agioscia”, respectively. Emerged early during epidemics. As a story Symbol of COVID-19. However, it is possible to estimate how many cases actually result from the symptoms. Wide range During epidemics and between different parts of the world.

In november A study It is estimated that approximately 1.6 million Americans suffer from long-term “chronic voluntary dysfunction” after their infection.

Sweating at night, another symptom cited by a doctor. Media briefing In South Africa, the country has been at the forefront of the Omicron wave. called by tabloids Like, “A statement mark that only occurs at night may mean that you have been targeted for the Omicron variant.” However, this symptom is not new – nine out of 10 patients in a report from Wuhan, China From February 2020 Entered the signs.

Case analysis In London A post from the ZOE COVID study states that “no significant difference in the symptomatic profile of Delta and Omekron was found last month, with only 50% of people reporting the classic three symptoms of fever, cough, or loss of sense of smell or taste.” Is facing. ” Which has tracked trends. Previous variables Also

More data on this topic is expected in the coming weeks.

From June, Monthly government survey About 30% of people with a positive infection in the UK are permanently tracked who report a lack of taste or smell, and about 40% report a cough or fatigue. A new round of survey data for December, when the Omicron variant began to add to the record there, is due to be released later this month.

Ongoing studies investigating the effects of omekron on animal and tissue specimens challenged with the virus in laboratories may also provide new clues, which may control factors such as immunity or underlying conditions that affect a variety of effects in humans. But you can put data in the mud.

“NIH-funded studies currently underway in both mice and hamsters confirm fewer viruses in animal models. Studies are being conducted here in non-human primate models at the NIH’s Vaccine Research Center.” Dr. Anthony Fookie, the president’s chief medical adviser, told reporters Previous Week.

Foucault pointed out some preprints, which have not yet completed the peer review, I am studying the virus. Rats And Hamster There were signs that omecron could spread worse in the lungs than in delta. Similarly Results Researchers in Hong Kong suggest that omecron may spread from the Bronx to the tissues faster than the delta (the airway leading to the lungs) but slower in the lungs.

Brian Willett of the University of Glasgow says that “seemingly subtle changes in viral biology can have significant real effects on the nature of the disease that results from infection.”

Vallett recently wrote a book. the studyHow Omicron Affects Cells in the Body

Delta said the delta was “fine-tuned” to infect cells through fusion, a mechanism by which the virus could attach to the cell membrane. Omicron appears to favor endocytosis, a process by which a virus enters a cell and infects it. Each pathway requires different molecules that appear in different amounts depending on the cell.

“If the cells of the upper respiratory tract are prone to infection by endocytosis, this is where Omicron will preferably grow. Conversely, the delta can spread deeper into the lungs because it increases the number of cells in this environment.” Able to impress effectively, “said Willett. .