We have all heard about some of the more common symptoms of coronavirus – a persistent, dry cough and a high temperature. If you have either of these symptoms, then you must stay at home and self-isolate for at least seven days.
But as time has gone on, we have learned a lot more about the virus and how it behaves; and it is clear that like most infections, different people exhibit different symptoms.
We know now that shortness of breath, headaches and sore throats can also form part of myriad symptoms, albeit in fewer patients.
Now, people are starting to report losing their sense of taste and smell. And it seems that a loss in some people’s sense of smell (anosmia) or loss of sense of taste (ageusia) can be the only symptoms they have at all.
Countries such as China, Iran, Italy, Germany and France have all reported cases of COVID-19 where patients reported a temporary loss in their sense of smell and/or taste.
According to the British Association of Otorhinolaryngology (ENT UK), both of these symptoms have been found among “a number of patients” in the “absence of other symptoms”.
In a statement, Professor Claire Hopkins, president of the British Rhinological Society, and Professor Nirmal Kumar, president of ENT UK, said: “We think these patients maybe some of the hitherto hidden carriers that have facilitated the rapid spread of COVID-19. Unfortunately, these patients do not meet current criteria for testing or self-isolation [in the UK].”
Some of the purely respiratory symptoms that you might attribute to the disease, the inability to get air into the lungs, might actually be defects in respiration controlled by the nervous system.
British ear, nose and throat doctors have called on adults who lose their sense of smell to isolate themselves for seven days, even if they have no other symptoms, as studies indicate that a loss of smell and taste could be a symptom of COVID-19, the disease caused by the novel coronavirus.
Can viruses get into your nerves?
Viruses and bacteria are constantly bombarding the lining of the nose. Luckily our defence mechanisms prevent most pathogens penetrating into the deeper layers of tissue.
Yet some pathogens can penetrate the nasal lining and are known to enter the olfactory nerve, which is responsible for the sense of smell. Pathogens can also enter the trigeminal nerve, which is responsible for controlling biting and chewing, and for sensation in the face.
If viruses or bacteria do enter the nerves, the consequences can be serious. Perhaps the most striking example is Bell’s palsy, where part of the face is temporarily paralysed, and which may sometimes be caused by a viral infection of the facial nerve.
How does an infection affect the sense of smell?
This killing of the olfactory nerve cells is likely to be the main reason people lose their sense of smell after an infection. Once 20-30% of the olfactory nerve cells have died, people will report they have lost their sense of smell.
If a person has lost 30% of their olfactory nerve cells, they won’t be able to detect enough odour molecules to activate the threshold level for smelling when they breathe normally. However, if they sniff harder they will probably be able to smell enough to recognise an odour.
Our research with bacteria has shown that olfactory nerve damage can occur within 24 hours of initial exposure, and (unpublished) results with other viruses show they can act even more quickly. In this way, loss of sense of smell can indeed be an early indicator of a potential pathogen onslaught within the nasal system.
Why is taste affected as well?
What we usually think of as “taste” when we enjoy a delicious meal is actually the combination of smell and taste. When people lose their sense of smell, the major contribution to the enjoyment of food is lost.
This is why people may report they have also lost their sense of taste – which strictly speaking depends on the tongue and tastebuds – when they have lost only their sense of smell.
Why do only some people with COVID-19 lose their smell?
Our bodies and immune systems are very diverse, due to genetics and circumstances. Not all people will be susceptible to particular pathogens or affected in the same way.
Our research in mice has clearly demonstrated not only that different strains of mice are susceptible to different bacteria but also that different nerve routes can be affected.
While we do not yet know if SARS-CoV-2 does harm the olfactory nerve, a similar process could explain why some people report a loss of smell and some don’t.
Organic food may help against heart disease. People who choose organic powders like coconut powder, almond powder, blackseed powder, sandalwood powder and vegetable oil like Olive Oil, Flaxseed Oil, Coconut Oil to avoid pesticides and other chemicals may have another reason to buy organic.
People should use moringa powder as it is an immunity booster. In recent days while everyone is fighting against corona which attacks badly those people who have weakened immunity and can’t fight against it.
Only people with strong immunity can survive by fighting against corona. Many researcher papers and studies show that elder and children have weakened immunity and suffer from corona with a high mortality rate.
Therefore moringa is essential for everyone especially elders and children to stronger their immunity to fight against corona.
Because people who have weaken immunity can’t fight against corona,which causes high mortality rate.. Therefore, moringa is the best choice to strengthen your immunity
Aloe vera juice has an antiviral, antibacterial and antifungal activity to fight against different diseases.