Other sporadic occurrences of the parasite in its rat hosts have been reported in Cuba, Egypt, Louisiana, Madagascar, Nigeria, and Puerto Rico.In 2013, A. cantonensis was confirmed present in Florida, USA, where its range and prevalence are expanding. In 2018, a case was found in a New Yorker who had visited Hawaii.In recent years, the parasite has been shown to be proliferating at an alarming rate due to modern food-consumption trends and global transportation of food products. Scientists are calling for a more thorough study of the epidemiology of A. cantonensis, stricter food-safety policies, and the increase of knowledge on how to properly consume products commonly infested by the parasite, such as snails and slugs that act as intermediate hosts or those that act as paratenic hosts, such as fish, frogs, or freshwater prawns. Ingestion of food items that can be contaminated by the mucus excretions of intermediate or paratenic hosts, such as snails and slugs, or by the feces of rats that act as definitive hosts, can lead to infection of A. cantonensis. The most common route of infection of  A. cantonesis in humans is by ingestion of either intermediate or paratenic hosts of the larvae. Unwashed fruits and vegetables, especially romaine lettuce, can be contaminated with snail and slug mucus or can result in accidental ingestion of these intermediate and paratenic hosts. These items need to be properly washed and handled to prevent accidental ingestion of A. cantonensis larvae or the larvae-containing hosts.
Clinical signs and symptoms
According to a group case study, the most common symptoms in mild eosinophilic meningitis tend to be headache (with 100% of people in the study suffering from this symptom), photophobia or visual disturbance (92%), neck stiffness (83%), fatigue (83%), hyperesthesias (75%), vomiting (67%), and paresthesias (50%). Incubation period is often 3 weeks, but can be 3–36 days and even 80 days.Possible clinical signs and symptoms of mild and severe eosinophilic meningitis are:

Fever is often minor or absent, but the presence of high fever suggests severe disease. Headaches are progressive and severe, a bitemporal character in the frontal or occipital lobe. Meningismus - neck stiffness
Photophobia - sensitivity to light
Muscle weakness and fatigue
Nausea with or without vomiting
Paresthesias - tingling, prickling, or numbing of skin, may last for several weeks or months
Hyperesthesia - severe sensitivity to touch; may last for several weeks or months
Radiculitis - pain irradiated along certain areas of skin
Bladder dysfunction with urinary retention
Constipation
Brudzińskis sign
Vertigo
Blindness
Paralysis localized to one area; e.g. paralysis of extraocular muscles and facial palsy
General paralysis (flaccid) often ascending in nature starting with the feet and progressing upwards to involve the entire body
Coma
Death

Treatment
The severity and clinical course of Angiostrongylus disease depends significantly on the ingested load of third-stage larvae, creating great variability from case to case, making clinical trials difficult to design, and effectiveness of treatments difficult to discern. Typical conservative medical management including analgesics and sedatives provide minimal relief for the headaches and hyperesthesias.