Knowledge of hand cleanliness among medical students and nurses at tertiary healthcare centre: a cross-sectional study

Background: Hand hygiene is documented as one of the foremost techniques to prevent cross-transmission of germs. Objectives: This paper aims to assess the knowledge of hand cleanliness among medical students and working nurses. Methods: It was a cross-sectional descriptive study, carried over a sample selected by non-probability convenient sampling technique. The questionnaire used here to assess the knowledge and practice on hand hygiene was adapted from the World Health Organization (WHO) Guidelines on Hand Hygiene in Health Care. The data thus collected were presented in terms of counts and percentages. Chi-square test was used to test the significance of the differences, and a p-value of less than 0.05 was considered as statistically significant. Results: Overall, 92.08% of participants have received training in handwashing. Twenty-five (41.60%) medical students believed that the microbes already present with the patient were responsible for hospital-acquired infection (HAI). Medical students had significantly higher knowledge than working nurses regarding dryness of skin due to hand rubbing over handwashing (p<0.05). Medical students also had substantially higher awareness about the performance of handwashing and hand rubbing in sequence (p<0.05), which they think was not right. Knowledge on the colonisation of hands with harmful microbes was more with the nurses. Conclusion: There is a need to increase awareness among medical students and nurses regarding procedural hand hygiene methods to prevent HAI. The current findings can be a basis for conducting a training programme on hand hygiene practices for the medical students, including paramedical staff members.

Prevalence of hypertension and its risk factors in a tea garden community of Dibrugarh District, Assam.

A cross-sectional study was conducted during August 2003- July 2004 to assess the prevalence of hypertension among a tea garden population in a district of Assam and to ascertain the identified risk factors. 510 labourers aged 20-59 years were studied. Overall prevalence of hypertension was 33.3% with no significant sex difference. 30.2% had history of smoking and 76.7% of tobacco chewing; 78.4% consumed alcohol (regular and occasional), 5.7% were overweight and 14.3% underweight. Waist hip ratio was normal in 89.2% subjects. The association between increasing age and hypertension could be established in univariate analysis. On multiple logistic regression analysis regular alcohol intake was also found to be significantly associated factor with hypertension.

Transmission of bancroftian filariasis in tea agro-ecosystem of Assam, India.

Tea industry is a labor intensive agro-industry and filariasis is mostly localized among the tea garden workers in Assam. The workers live inside the gardens in colonies. Studies conducted in two cosecutive years revealed that among the host seeking Culex quinquefasciatus average infection rate was 4.6% and with 2.1 larvae per mosquito. The overall prevalence of infective mosquitos was 0.8% with average L3 load of 2.0 per mosquito. The probability of infected mosquitos surviving to have complete development of filarial larvae (13 days) was 0.17. The expectation of infective life was 1.416 days for man biting Cx. quinquefasciatus and the estimated adult survival rate of was 87.6%. It has been estimated that a total of 22,569 mosquito bites were received/man/year in tea garden environment out of which 182 bites/man/year were infective (0.806%). The monthly biting rate varied from 310-4,758.5 bites per man (mean 1,846 +/- 1,389.7 SD). Monthly transmission index of W. bancrofti filaria showed two periods of transmission. In both the year no infection was detected during February and March and infection rate remained low up to May (average infection in April 0.72% and in May 0.48%).

Temporal variations in biting density and rhythm of Culex quinquefasciatus in tea agro-ecosystem of Assam, India.

Temporal changes in the biting density and host-seeking periodicity of Culex quinquefasciatus, the vector of bancroftian filariasis, were studied for two years in the tea agro-ecosystem of Assam, India. Average biting density of the vector varied from 0.8/hour in December to 13.3/hour in March. Minimum temperature was found to have a limiting effect on the biting density of the vector mosquitos. Multiple regression analysis showed that the rainfall and minimum temperature were significant factors influencing biting density of this vector mosquito. The biting rhythm of Cx. quinquefasciatus was found to be nocturnal with two distinct peak periods of biting activity. The first peak was around 19.00 to 20.00 hours and the second peak period was around 22.00 to 23.00 hours. Biting activity however was seen throughout the night with declining trend as the night proceeded.