Epidemiology of Zika Virus Infection Nong Khai Province During the year 2015-2019

Abstract

This cross sectional descriptive study and research objective was to study descriptive epidemiology (person, place, and time) and the factors associated with symptoms of the Zika Virus disease. the populations were all with Zika Virus Infection of 47 patients in Nong Khai Province during 1 January 2015 until 31 December 2019. The data were analyzed by statistics for investigation report for Zika virus infection and Aedes larvae survey was conducted to collect data. Using for statistics: frequency, percentages, means and Chi-Square Tests (c²).

Research results show that characteristics of person a total of all 47 patients were treated with Zika virus. Most of cases were female (63.8%), 25-44 years old (42.6%), farmers (27.7%), students (25.5%), employed and laborers (21.3%) respectively. Residence the most reported cases were living in Pho Tak District 22 cases (46.8%), Rattanawapi District 13 cases (27.7%), Phon Phisai District 10 cases (21.3%) and Fao Rai District 2 cases (4.3%) respectively. Distribution of disease by time with Zika virus in 2015 and 2018 there were no patient reports, Patients starting from 2016, 2017 and 2019. Overall of Zika virus patients were most found in July, May and September. In 2016, there were 11 cases, most in July 6 cases, the first started on 28 June 2016, last on 14 September 2016. In 2017, there were 12 patients, the first started on 1 January 2017, last on 3 July 2017, the most in May 4 cases. In the year 2019, there were 24 cases, the first started on 23 January 2019, last on 27 October 2019, the most in September 19 cases. Risk factors of disease occurrence during the 14 days before onset, 68.1% of patients touched, residential homes in the radius of the suspected/ Zika confirmed 51-100 meters, 42.6% and travel in risk areas 36.2% respectively. 93.6% of new Zika virus case who had 1-2 households and 6.4% pregnant women in the village. Mosquito larvae was vector, surveyed during the first day after sickness, Mosquitoes larvae found in levels higher than the threshold, at patients home (HI means =36.8), community (HI means =19.9), religious place (CI means =30.9), school (CI means =39.3). Found that the factors related to the symptoms of Zika virus infection Statistical significance Including sex, joint pain/ muscle pain (p = 0.019), fatigue (p = 0.002), places include joint/ muscle pain (p = 0.013) and all symptoms of Zika virus were not related to age group and occupation. Conclusion: the risk of disease distribution by characteristics of person, place, and time was correlated with the symptoms of Zika virus infection with statistical significance.