Health risk of Enterococcus population after Hurricane Lane



by LORENZO CIOTTI

Health risk of Enterococcus population after Hurricane Lane

Hurricane Lane was the ninth and sixth largest hurricane of the 2006 hurricane season. It was the most violent hurricane to ever touch land in Mexico after Hurricane Kenna in 2002. Developed on 13 September 2006 from a tropical storm in southern Mexico, it moved north-west parallel to the Mexican coast, having steadily increased its intensity due to the crossing of areas favorable to its development.

After veering north-east, Lane landed on the shores of Sinaloa as her winds reached peak speeds of 125 mph. It quickly weakened and dissipated on September 17, bringing rainfall to the southern regions of Texas. Along the way, Lane caused four deaths and caused moderate damage.

The greatest damage was caused in Sinaloa, particularly to crops. Across Mexico, an estimated 4,320 homes were affected by the hurricane, with around 248,000 people involved. Moderate flooding was reported in Acapulco, causing landslides in some areas.

The damages across the country amounted to 2.2 billion Mexican dollars, equal to 206 million dollars in 2006. The study, Diversity and health risk potentials of the Enterococcus population in tropical coastal water impacted by Hurricane Lane, makes an interesting retrospective on this precise topic.

Published on the Journal of water and health: "Hurricane-caused stormwater runoffs transport diverse terrestrial pollutants, adversely impact microbiological water quality, and introduce fecal and other pathogens to coastal water environments.

This study investigated the genotypic diversity, phylogenetic composition, antibiotic resistance patterns , and virulence gene repertoire of the Enterococcus population in the Hilo Bay coastal water after the immediate impact of Hurricane Lane.

DNA fingerprinting of Enterococcus isolates exhibited large genotypic diversity, while 16S rRNA gene sequencing identified four major species, including E. faecalis (34.7% ), E. faecium (22.4%), E. hirae (22.4%), and E. durans (18.4%).

Four common enterococcal virulence genes (cylA, esp, asa1, and gelE) were detected in the Enterococcus population, with significant portions of E. durans (33.3%), E. faecalis (41.2%), E. faecium (36.4%), and E. hirae (27.3%) isolates possessing two or more virulence genes.

Co nsiderable antibiotic resistance to rifampin, erythromycin, tetracycline, and nitrofurantoin was detected in the Enterococcus population, with one E. durans isolate showing vancomycin resistance. The results indicate considerable health implications associated with Enterococcus spp.

in the hurricane-impacted tropical coastal water, illustrating the needs for more comprehensive understanding of the microbiological risks associated with storm-impacted coastal water."