New coronaviruses like to invade the respiratory system, especially the lung organs, where they thrive in the fertile soil of the lungs (commonly known as the "virus processing plant"). People exhale the virus and inhale it, and then inhale the virus into their bodies, thus spreading the virus between one exhale and one inhale without realizing it.

Nucleic acid testing can help us to find this cunning and stubborn group of viruses. The new coronavirus is spread from the alveoli - bronchi at all levels - trachea - larynx - (and then divided into two ways) nose and throat, one way out of the nasal passage, the other way out of the oropharynx passage, these two throat places also become the virus incubation site, so these two parts of the virus is also the most likely to be

"captured".

Why does nucleic acid testing sampling cause nausea, tears, and uncomfortable?

The nasal cavity is connected to the eyes through the nasolacrimal duct, so when the top of the nose is poked deeply, tears will come out, indicating that the sampling is in place; and when the epiglottis is poked deeply, it will cause nausea and vomiting; and the pharynx is the center of the eustachian reflex (pharyngeal muscle contraction), this reflex is sensitive, some people are dull, a normal physiological phenomenon; the reflex means that the "virus nest" is found ".

Nucleic acid testing will generally be done in one of the following two ways, and you will only need to cooperate with the following steps.

Nasal swab: remove the mask - tilt your head - hold your breath - hold for 10 seconds - put on the mask (you can close your eyes, it will increase the comfort level) - end;

Pharyngeal swab: remove the mask - tilt your head - open your mouth - expose your tonsils - hold your breath - hold for 10 seconds - put on the mask - end.

Precautions:

① Never hang your tongue, arch your back, spin, roll up to block the small swab channel, and keep your tongue close to the bottom side of the mouth.

②Clean up oral food residue and internal nose secretions before testing to reduce external interference.

Safely and effectively cooperate with medical staff to do nucleic acid sampling and build a firm line of defense against the epidemic, let's cheer together!