. Angiostrongylus cantonensis, commonly known as the rat lungworm, is a parasitic nematode that primarily infects rats, with snails and slugs. Humans can become infected by ingesting contaminated food, such as raw or undercooked snails, slugs, freshwater prawns, crabs, or vegetables contaminated by slime from infected mollusks.
. In humans, infection can lead to eosinophilic meningoencephalitis characterized by severe headaches, neck stiffness, nausea, vomiting, fever, paresthesia, muscle twitches, diplopia, fascial paralysis with peripheral eosinophilia and ocular angiostrongyliasis. Neurological complications may occur. Early diagnosis and management are crucial to preventing complications.
. The Angiostrongylus cantonensis IgM test is an important serological assay used to detect specific IgM antibodies against the parasite. This test helps confirm recent or active infections, particularly in endemic areas where symptoms may overlap with other causes of meningitis. Early detection allows prompt medical intervention, reducing morbidity and preventing long-term neurological damage.