British researchers say that after people are infected with the novel coronavirus COVID-19, their natural immunity to it could decline within months.
According to CNN, a new paper suggests that antibody responses may start to decline 20 to 30 days after COVID-19 symptoms appear.
However, the paper has not yet been published in a peer-reviewed medical journal.
Antibodies are the proteins the body makes to fight infection.
The findings may have implications for the development of a vaccine against the novel coronavirus.
Any vaccine will either need to generate stronger and longer-lasting protection against the virus, or it may need to be given regularly.
As of Monday, the World Health Organization said there are 23 COVID-19 candidate vaccines in clinical evaluation globally.
