Another Study Shows Natural Immunity Works Best

ANOTHER Study Shows Natural Immuninty is Best at defeating the China Virus - Take off the Masks and let your Body's Imune System Work as God Design it!


BY MEILING LEE, July 31, 2021

Most people who have recovered from COVID-19, even with mild illness, retain a broad and durable immunity to the disease, including some degree of protection against its variants, according to an Emory University study published in the journal, Cell Reports Medicine.

The longitudinal study, the most comprehensive of its kind to date, involved 254 COVID-19 patients, between the ages of 18 to 82 years, who provided blood samples at various points for a period of over eight months beginning in April 2020. About 71 percent of the patients had mild disease, 24 percent experienced moderate illness, and five percent had severe disease.

The researchers found that most of the patients who recovered mounted a strong and wide-ranging immune response to the CCP (Chinese Communist Party) virus for up to 250 days.

“We saw that antibody responses, especially IgG antibodies, were not only durable in the vast majority of patients but decayed at a slower rate than previously estimated, which suggests that patients are generating longer-lived plasma cells that can neutralize the SARS-CoV-2 spike protein,” Rafi Ahmed, director at Emory Vaccine Center and lead author told Emory News Center on July 22.

SARS-CoV-2 is the scientific name of the CCP virus that causes the disease COVID-19.

The authors said that natural immunity after recovery from the disease offered some degree of protection against variants as research suggests that COVID-19 vaccines may be slightly less effective against them.

“The immune response to natural infection is likely to provide some degree of protective immunity even against SARS-CoV-2 variants because the CD4+ and CD8+ T cell epitopes will likely be conserved,” the authors wrote.

The Centers for Disease Control and Prevention (CDC) says it is monitoring multiple variants, but only four are of concern since they “seem to spread more easily and quickly than other variants.”

While experts say variants may be more transmissible, that does not necessarily translate to more severe disease or fatalities.

The Indian or delta variant currently accounts for over 80 percent of all new sequenced cases in the United States. Scientists say more research is still needed to confirm if infection with this variant is associated with more severe disease, hospitalization, and death.

The other three variants of concern, named according to where they were first identified, are the United Kingdom variant, the South African variant, and the Brazilian variant.

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The authors also found that COVID-19 recovered patients displayed stable antibody responses to the other human coronaviruses that cause the common cold, the Middle East Respiratory Syndrome, or the severe acute respiratory syndrome (SARS-CoV).

“These data are most consistent with the generation of long-lived plasma cells and refute the current notion that these antibody responses to human coronaviruses are short lived,” the researchers said. “Moreover, the COVID-19 patients mounted increased IgG antibody responses to SARS-CoV-1, a related pathogen that none likely had experienced previous exposure to.”

The researchers will continue to follow the cohort for several years, with the last sample collection of the participants set for February 2023. Doing so allows the researchers to gather more data to “define the progression to long-lived immunity” to the CCP virus after natural infection.

The findings add to the growing body of research that indicates that recovered COVID-19 patients develop long-lasting immunity.

A limitation of the study is that it didn’t include more severe COVID-19 patients and those who are asymptomatic. However, the authors noted that “mild-moderate illness accounts for [more than] 80 percent of COVID-19 cases, highlighting the relevance of our findings over time.”

The authors said that the study’s findings will “also serve as a benchmark for immune memory induced in humans by SARS-CoV-2 vaccines.”

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