What are the different types of antibodies? Do they offer different types of immunity?

There are three different types of antibodies: IgM, IgG, and IgA.

• Immunoglobulin M (IgM) is produced as the body’s first response to a COVID-19 infection. Generally, IgM may provide short-term protection and can help tell if an individual has been recently infected.
• Immunoglobulin G (IgG) is the most common type of antibody. It’s made several days to weeks after being exposed to COVID-19. Generally, IgG remains in the body and may provide long-term protection against future exposure.
• Immunoglobulin A (IgA) is found in the blood, sinuses, lungs, and stomach. Generally, IgA helps protect these areas from infection. However, the role of these antibodies in determining exposure or immunity is unknown.