#how_vaccine_work
#corona_virus
#what_happend_of_corona_virus
How Does Coronavirus Attack Your Body?
A virus infects your body by entering healthy cells. There, the invader makes copies of itself and multiplies throughout your body.
The new coronavirus latches its spiky surface proteins to receptors on healthy cells, especially those in your lungs.
Specifically, the viral proteins bust into cells through ACE2 receptors. Once inside, the coronavirus hijacks healthy cells and takes command. Eventually, it kills some of the healthy cells.
How Does Coronavirus Move Through Your Body?
COVID-19, the illness caused by the coronavirus, starts with droplets from an infected person’s cough, sneeze, or breath. They could be in the air or on a surface that you touch before touching your eyes, nose, or mouth. That gives the virus a passage to the mucous membranes in your throat. Within 2 to 14 days, your immune system may respond with symptoms including:
Fever
A cough
Shortness of breath or trouble breathing
Fatigue
Chills, sometimes with shaking
Body aches
Headache
A sore throat
Congestion or a runny nose
Loss of taste
Loss of smell
Nausea or vomiting
Diarrhea
What Else Does COVID-19 Do to Your Body?
Some people also have symptoms including:
Pinkeye
Rashes
Liver problems or damage
Heart problems
Kidney damage
Dangerous blood clots, including in their legs, lungs, and arteries. Some clots may cause a stroke.
HOW VACCINES WORK—
A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response.
These molecules are called antigens, and they are present on all viruses and bacteria. By injecting these antigens into the body, the immune system can safely learn to recognize them as hostile invaders, produce antibodies, and remember them for the future. If the bacteria or virus reappears, the immune system will recognize the antigens immediately and attack aggressively well before the pathogen can spread and cause sickness.
Advantages: Because these vaccines introduce actual live pathogens into the body, it is an excellent simulation for the immune system. So live attenuated vaccines can result in lifelong immunity with just one or two doses.
