Researchers at the Abbottabad University of Science and Technology (AUST) believed Pakistanis were previously exposed to at least one coronavirus strain.
Dr. Ayub Jadoon, Assistant Professor of Immunology and Microbiology at AUST, said this may be the second time the Pakistani population has been exposed to coronavirus. For this factor, Pakistan has a low mortality rate and a higher rate of recovery than most countries.
For the second time, on exposure to the virus, the antibodies produced in a person during the first exposure help combat the virus, even though it is a different strain of the same virus. Those antibodies serve as a self-made virus vaccine.
Dr. Jadoon further added that most of the time mutations between viruses go unnoticed in underdeveloped countries such as Pakistan and these mutations are misdiagnosed as common cold or influenza with symptoms such as cough, fever, and trouble breathing.
Dr. Jadoon referred to more than 15 research papers which concluded that the immune system of people belonging to underdeveloped countries such as Pakistan was extremely well off against SARS-COV-2.
On the contrary, citizens living in countries known as pathogen-free nations were seriously affected by the SARS-COV-2 since they were first exposed to the virus.
Dr. Jadoon also discouraged the use of passive immunization methods to treat patients suffering from Coronavirus. Serious problems may occur in patients who on the first exposure have already developed vaccination against the virus.