There are many kinds of coronaviruses. Its diversity is frightening, but this is the reality we must face directly. Novel coronavirus pneumonia can cause a variety of diseases, ranging from mild mild to severe respiratory diseases such as SARS and MERS, and of course, New Coronavirus, which has led to the new crown pneumonia. So far, it has taken about 4000000 lives worldwide.
Moreover, even the novel coronavirus pneumonia causing new crown pneumonia has been mutating in the past year and a half. To the public, novel coronavirus pneumonia may be different in terms of suggestive symptoms, depending on which version of the coronavirus you have unfortunately been infected. But people don’t always know what it is. The typical initial symptom may be loss of smell or taste; Infection with delta variant may not cause these symptoms, but infected people may have other symptoms, such as runny nose and headache.
The novel coronavirus pneumonia is a strange disease. Public health officials are still trying to solve this mystery. The most common and some more peculiar symptoms have been concerned for quite a long time. These include sudden loss of taste or smell, sore throat, runny nose and nasal congestion, nausea, diarrhea, dyspnea, fever, and muscle soreness. These typical flu like symptoms intersect with colds, and then there will be some unexpected symptoms, such as decreased sensory function. If you suffer from “long covid”, you have to face the terrible prospect of long-term coexistence with it.
Many COVID-19 variants currently spread around the world, including the delta strain, which currently accounts for the majority of new infections in the United States, further complicates the problem, because different variants may be expressed in different ways. All these mutations, whether alpha, Delta, lambda variant strains, or other completely different variants, are still so new that it is difficult to assess the exact nature of each threat.
So far, among all the major variants listed as “variants to be concerned” by the Centers for Disease Control and the World Health Organization, delta mutant strain has the most serious lethality in the world. This mutant strain is known for its strong transmission and high viral load, and can spread pathogens faster in the early stage of the disease.
At present, according to the latest data released in the UK, the delta mutant strain may cause symptoms such as headache, sore throat and runny nose, as well as fever and cough. These symptoms may even appear in some people who are fully vaccinated with the new crown vaccine（ By the way, Britain is struggling with the delta infection wave.) Generally speaking, these novel coronavirus pneumonia symptoms are typical, but they do not include suggestive signs of loss of taste or smell.
This means that as we enter the flu and cold season in a few months, it may become more difficult to distinguish between patients infected with delta variant virus and patients with mild influenza.
The breadth and depth of these new crown variants will be revealed in the next few years. For now, the good news is that although the existing vaccines of Pfizer and AstraZeneca may not completely prevent the transmission of new crown variant strains and the emergence of these symptoms, they are quite effective in preventing severe diseases that may lead to hospitalization or death.