Mycoplasma Pneumoniae IgM antibodies

The bacteria Mycoplasma pneumoniae is spread by airborne droplets and infects the mucous membranes of the respiratory tract. These infections can be the cause of pharyngitis, laryngitis and sinusitis. A dry, hacking cough is the most common symptom of these infections. Not everyone who has mycoplasma and chlamydia in their nasopharynx gets sick - it depends on the body's resistance, but they can still infect others.

Depending on the person's immunity, IgM antibodies can be formed 1-2 weeks after infection and the titer can remain for several months or years. In case of re-infection - the IgM response may be weak or absent.