No menu items!

COSTA RICA'S LEADING ENGLISH LANGUAGE NEWSPAPER

HomeTopicsHealthIncreased Rainfall May Lead to Surge in Screwworm Infections in Costa Rica

Increased Rainfall May Lead to Surge in Screwworm Infections in Costa Rica

According to Costa Rican parasitologists, the upcoming months of heavy rains could increase screwworm cases by the end of 2024. “In warm climates with rising rain and humidity, parasite cycles thrive,” explained Victor Montenegro, a parasitologist at the School of Veterinary Medicine of the National University (UNA). Conversely, in drought conditions, many of these agents perish, and in extremely cold climates, most parasitic cycles are suppressed or fail to develop.

“Although upland regions and urban areas are not typically the primary habitat of the screwworm (Cochliomyia hominivorax), cases in these areas cannot be dismissed due to the fly’s extensive flight capabilities,” added Montenegro.

Data from the National Animal Health Service (SENASA) indicates a peak infection in cattle, affecting 75% of cases, equating to over 3,000 cattle. Dogs are next, with 15% of cases, nearing 600 infected animals. The expert emphasized the need for vigilance, especially with stray dogs or those spending long periods outside.

UNA veterinarians are also concerned about possible screwworm infection in wildlife. Due to their habitats, such as protected areas and national parks, it’s hard to determine the exact number of affected wild mammals. Species like deer, wild pigs, wild cats, and coyotes may be at risk.

“The problem is that if cases spread to wild animals, it could spiral out of control, as detecting and treating screwworm in wild animals is extremely challenging,” said Alexis Sandí from SENASA’s Epidemiology Department.

As of July 31, Costa Rica has reported 22 human cases of screwworm myiasis. According to the Ministry of Health, Puntarenas and San José have the highest case counts, though each of the other five provinces has reported at least one case.

The screwworm is transmitted by a fly that, after reproduction, seeks a place to lay eggs. Once hatched, maggots form. The complete cycle from egg-laying to the emergence of the next fly is 21 days.

Trending Now

Rights Groups Condemn El Salvador Over Arrest of Anti-Corruption Lawyer

The justice system of El Salvador has admitted a habeas corpus petition in favor of lawyer and humanitarian activist Ruth López, a critic of...

Costa Rica’s Pride 2025 Closing Event Bans Minors, Sparks Outrage

Costa Rica’s Pride 2025 closing event, set for June 29 at San José’s Plaza de la Democracia, was thrown into controversy when the government...

OIJ Warns: Costa Rica Now a Key Warehouse for Drug Lords

Costa Rica’s recent drug busts, with tons of cocaine and marijuana seized across the country, shine a harsh light on its deepening role in...

Why Costa Rica’s Northern Huetar Region Struggles Despite Its Riches

Costa Rica’s Northern Huetar Region, a sprawling area of 9,790 square kilometers, is home to over 437,000 people across districts like San Carlos, Upala,...

Costa Rica’s Defense Frustrates Mexico in Hard-Fought Gold Cup Stalemate

La Sele faced off against Mexico in a tense, scoreless draw at Allegiant Stadium in Las Vegas during the final matchday of Group A...

Panama Regains Control of Bocas del Toro After Violent Protests

Panama’s government has regained control of Bocas del Toro province after months of violent anti-government protests sparked by pension reforms, officials announced. The unrest,...
spot_img
Costa Rica Tours
Costa Rica Coffee Maker Chorreador
Costa Rica Coffee Maker Chorreador
Costa Rica Travel Insurance
Costa Rica Rocking Chait
Costa Rica Travel

Latest News from Costa Rica