Banca de QUALIFICAÇÃO: ODAIR JOSE QUEIROZ DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ODAIR JOSE QUEIROZ DA SILVA
DATE: 18/12/2024
TIME: 09:00
LOCAL: https://meet.google.com/kxz-jucr-mdt?authuser=0
TITLE:

EVALUATION OF Trypanosoma cruzi INFECTION IN TRIATOMINES IN
MUNICIPALITIES CONSIDERED TO HAVE HIGH TRANSMISSION RISK IN RIO GRANDE DO NORTE,
BRAZIL

KEY WORDS:

Triatoma brasiliensis.Triatomines Trypanosoma cruzi. Species.

PAGES: 55
BIG AREA: Ciências Biológicas
AREA: Parasitologia
SUMMARY:

The state of Rio Grande do Norte (RN) is endemic for Chagas disease, with 36
municipalities at high risk of Trypanosoma cruzi transmission. The aim of this study was to evaluate the occurrence of
triatomines infected by T. cruzi domiciliary units (UDs) in municipalities at high risk of parasite transmission in RN, as
well as the diversity of species in the wild environment. Triatomines were collected in DUs and wild environment,
identified, and their intestinal contents analyzed using direct examination, xenoculture, and kDNA PCR for parasite
detection. A total of 22 DUs were investigated, 14 in Sao Tome and six in Sitio Novo, with the presence of triatomines
recorded in 21.4% (3/14) and 16.7% (1/6) of them, respectively. Sao Tome showed a high percentage of infected
triatomines captured, corresponding to 14.2%. In the DUs, 40 triatomines were captured, and the only species identified
was Triatoma brasiliensis in both Sao Tome and Sitio Novo. The natural infection rate by T. cruzi was 7.5%, higher in
T. brasiliensis (8.8%). In the wild environment, the greatest species diversity was found in the ESEC-Serido
conservation unit, where specimens of T. brasiliensis, T. pseudomaculata, P. lutzi, and Triatoma sp. were captured.
Triatoma brasiliensis was the most frequently captured species in both ESEC-Serido and Sitio Novo. The natural
infection rate by T. cruzi was 3.5%, highest in P. lutzi (100% - 1/1), followed by T. pseudomaculata (50% - 1/2) and T.
brasiliensis at 2.8% (4/141). These findings highlight the importance of constant surveillance and control in high-risk
municipalities to prevent T. cruzi transmission to humans and animals.

COMMITTEE MEMBERS:
Interna - 1218940 - ANTONIA CLAUDIA JACOME DA CAMARA
Interna - 1715271 - RENATA ANTONACI GAMA
Interno - ***.948.304-** - TACIANO DE MOURA BARBOSA - UFRN