Since the outbreak of the epidemic, some rumors about the epidemic and information without scientific basis have also begun to spread like viruses, and information about health protection is the key area of rumors and rumors. Rumors stop at wise men. To identify the truth of this kind of information, we must believe in science, learn more popular science and learn more.
Recently, several pieces of information about COVID-19’s prevention, anti-bacteria and anti-virus have been widely circulated on the Internet. These pieces of information are ambiguous and specious, but they have attracted much attention. So, are these rumors true and have scientific basis?
Fear of "chlorine" on disinfectant is alarmist.
Recently, it was reported on the Internet that chlorine-containing disinfectants were the most sold in the market during the epidemic, and those with the word "chlorine" in their names were chlorine-containing disinfectants.
First of all, it is a fact that the highly effective disinfectant represented by 84 disinfectant is one of the most widely used in disinfection products in this epidemic. However, in the process of epidemic prevention and control, alcohol, peracetic acid and high-purity plant-based bacteriostatic agents are also widely used, and the use in disinfection products is adapted to local conditions.
Secondly, too much emphasis on "chlorine" in disinfectants will greatly reduce the effect of information dissemination and even have negative effects. Zhang Zhigang, a senior engineer specially appointed by Inner Mongolia Institute of Biotechnology, told the reporter: "Humans have been disinfecting and sterilizing with toxic chlorine for a long time, which is the toxicity of chlorine, but as long as such products are used correctly, they will basically not cause harm to the human body. For any chemical disinfection products, we must first learn the correct method and master the scientific proportion when using it. Under this premise, there is no need to worry that the chemical components in it will cause harm to the human body. "
Misleading people to struggle with words is the main feature of this message. In fact, disinfection products, whose names do not contain the word "chlorine", such as bleaching powder and high-efficiency anti-virus effervescent tablets, are all chlorine-containing disinfectants. As long as they are used correctly, they are basically harmless to the human body without food, drink or contact.
"Drinking single fir tea can prevent COVID-19" is a rumor.
"Drinking more single fir tea in Zhong Nanshan has a great effect on the prevention and treatment of pneumonia" and "Eating more certain food has a great effect on the prevention and treatment of pneumonia" … …
For such rumors that the level of rumors is seriously low, common sense can be broken. First of all, highly respected and rigorous scientists will never make such remarks publicly. Secondly, there is no such institution as the National Health Bureau in China, and the rumors are self-defeating.
From a scientific point of view, the single fir tea, like other teas, has a certain health preserving function, but it has nothing to do with preventing and killing Covid-19. Zhang Zhigang said: "Because single fir tea contains tea polyphenols, and tea polyphenols have biological activities such as antioxidation, bacteriostasis and enzyme inhibition, the efficacy of this tea is easy to be infinitely amplified in an extraordinary period."
Experts suggest that drinking tea for health preservation is scientific, but no research shows that drinking tea can prevent diseases like COVID-19, and Shan fir tea is no exception. Drinking tea can prevent the growth and spread of pneumonia virus, which is even more nonsense.
Abuse of eye drops "antivirus" is counterproductive.
"Have you heard? Levofloxacin eye drops can prevent COVID-19 virus and effectively prevent Covid-19 from infecting human body through eyes … …”
Recently, many people went to pharmacies to buy levofloxacin eye drops, claiming that this kind of eye drops can prevent Covid-19 from entering the eyes, which triggered a small wave of "eye-catching drugs". In this regard, our reporter connected with Fan Haining, vice president of the Affiliated Hospital of Qinghai University, who is fighting the epidemic in Wuhan. Fan Haining said that "levofloxacin eye drops prevent and treat Covid-19" is indeed a rumor. People should not blindly use antibiotics to prevent or treat Covid-19. He introduced that levofloxacin is a common eye drop, and its main active ingredient is levofloxacin hydrochloride. Levofloxacin hydrochloride, as a broad-spectrum antibacterial agent, is widely used in the treatment of urogenital system, skin and soft tissue, digestive system, septicemia, arthritis and other fields, including the treatment of mild to moderate common pneumonia, but it has no effect on COVID-19 virus. Because there is no "specific medicine" for COVID-19 virus so far, and levofloxacin is not included in the "novel coronavirus Diagnosis and Treatment Plan (Trial Seventh Edition)", antibiotics should not be used blindly.
"Levofloxacin is an antibiotic, not an antiviral. COVID-19 is mainly transmitted through respiratory tract, and the amount of virus exposed by breathing is more than that of eyes. Although the virus may enter the eyes by rubbing eyes and other actions, it is unlikely to be removed by eye drops. It is not recommended or advocated that people drop any eye drops by themselves for the so-called ‘ Antivirus ’ Because of the long-term abuse of levofloxacin, it will also have side effects and dependence on the cornea, and cause symptoms such as itchy eyes and sensitive irritation. The abuse of levofloxacin by allergic constitution may cause symptoms such as shock, allergy and rash. Injection of levofloxacin hydrochloride will cause a burden on the kidneys and liver. " Fan Haining said.
Realgar can not only prevent COVID-19, but also poison itself.
Recently, it was reported on the Internet that realgar can prevent COVID-19. As a matter of fact, this chemical can not only kill Covid-19, but also be poisoned if taken in excess.
Zhang Zhigang introduced: "Modern medicine does have clinical application to realgar. According to the information we have, realgar has played a certain anti-cancer role in mice. Clinically, it is only used in a limited range such as herpes zoster, chronic bronchitis and pterygium, and it has great damage to human renal function and digestive function, and it also has corrosive effect on human cells, but it has no connection with the treatment of COVID-19."
Zhang Zhigang suggested that the scientific name of realgar is arsenic tetrasulfide. If you take it for a long time, arsenic poisoning will occur. However, realgar will undergo an oxidation reaction at a certain temperature, generating highly toxic arsenic trioxide (arsenic). Therefore, in an extraordinary period, after receiving such information, we must scientifically examine and identify it, and we must not follow suit, let alone believe it.
Infrared thermometer is harmful to health? Rumors!
Recently, a news spread widely on the Internet, claiming that it is best to test the wrist when using an infrared thermometer to detect body temperature. If the infrared thermometer frequently irradiates the eyes, it will damage the retina, which will cause eye diseases such as glass lens opacity and cataract, and serious macular degeneration will occur. If the neck is measured, because it is close to the thyroid gland, improper use will also have adverse effects.
So, is the infrared thermometer really harmful to health? "There is no doubt that this is another rumor." Fan Haining said.
He introduced that in daily life, infrared devices that humans are exposed to are very common, such as ‘ Small sun ’ Heaters, massagers, electric stoves, and electrical equipment such as induction faucets, hand dryers, wireless mice, and Bluetooth headsets, which are popular in recent years. The working principle of infrared thermometer is to focus the infrared radiation of human body on the detector, and the detector will convert the radiation power into an electrical signal, which will be displayed in the unit of temperature after being compensated for the ambient temperature. The infrared thermometer does not emit infrared rays to the human body, but receives infrared radiation from the human body, and will not cause any harm to the human body.
At the same time, Qi Haiyan, deputy chief physician of the Department of Ophthalmology, Shunyi Women and Children Hospital of Beijing Children’s Hospital, also said in an interview with the media that the high intensity of infrared rays can cause certain irritation and damage to the eyes, which can seriously cause cataracts, retinal damage and even blindness. The eye can absorb infrared rays with a wavelength less than 1.5 microns. If the eye is directly irradiated, the liquid in the eye can react by absorbing short-wave infrared rays, causing eye diseases. "However, the infrared thermometer on the market does not emit infrared rays, but emits red light for the convenience of positioning. Its working principle is to measure by receiving the infrared wavelength in the heat emitted by the human body." Yan Haiyan said.
关于作者