A new test shows whether your immune system can neutralize the coronavirus
neutralizing antibodies.suggest we can rethink our understanding of long term immunity to Covid, and offers hope for the effectiveness of a future vaccine.When a virus infects our body, our immune system kicks into action to combat it in a number of ways. One part of that immune response involves antibodies, the tiny proteins which recognize a virus and stick to it. But not all antibodies are made equal.
Neutralizing antibodies are not sufficient in all cases. But based on the body’s response to other viruses, neutralizing antibodies are a“All the antibody tests at the moment look at total antibodies, and these can reduce significantly just a few months after a patient recovers from Covid,” says Wang. “But as long as you have a small amount of neutralizing antibody, the patient may still be immune to the virus.
The research shows GenScript’s novel, specific, and more sensitive antibody test could detect significant levels of neutralizing antibodies, even in patients who show low levels of antibodies overall. This effect was confirmed across patient cohorts in two different countries: Singapore and China. At the moment, the company can’t say for sure that this test—even if it detects neutralizing antibodies—guarantees immunity against reinfection with Covid. That still requires further research. However, the test could offer a vital step when trying to figure out our current levels of herd immunity, for example, or whether that’s even achievable without a vaccine. When a vaccine does come along, it can also help show whether it is effective.
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