Humans ; Floods ; Paraffin ; Paraffin Embedding

BACKGROUND: Understanding the association between floods and bacillary dysentery (BD) incidence is necessary for us to assess the health risk of extreme weather events. This study aims at exploring the association between floods and daily bacillary dysentery cases in main urban areas of Chongqing between 2005 and 2016 as well as evaluating the attributable risk from floods. METHODS: The association between floods and daily bacillary dysentery cases was evaluated by using distributed lag non-linear model, controlling for meteorological factors, long-term trend, seasonality, and day of week. The fraction and number of bacillary dysentery cases attributable to floods was calculated. Subgroup analyses were conducted to explore the association across age, gender, and occupation. RESULTS: After controlling the impact of temperature, precipitation, relative humidity, long-term trend, and seasonality, a significant lag effect of floods on bacillary dysentery cases was found at 0-day, 3-day, and 4-day lag, and the cumulative relative risk (CRR) over a 7-lag day period was 1.393 (95%CI 1.216-1.596). Male had higher risk than female. People under 5 years old and people aged 15-64 years old had significantly higher risk. Students, workers, and children had significantly higher risk. During the study period, based on 7-lag days, the attributable fraction of bacillary dysentery cases due to floods was 1.10% and the attributable number was 497 persons. CONCLUSIONS This study confirms that floods can increase the risk of bacillary dysentery incidence in main urban areas of Chongqing within an accurate time scale, the risk of bacillary dysentery caused by floods is still serious. The key population includes male, people under 5 years old, students, workers, and children. Considering the lag effect of floods on bacillary dysentery, the government and public health emergency departments should advance to the emergency health response in order to minimize the potential risk of floods on public.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China/epidemiology* ; Cities ; Dysentery, Bacillary/epidemiology* ; Female ; Floods ; Humans ; Incidence ; Infant ; Infant, Newborn ; Male ; Middle Aged ; Retrospective Studies ; Young Adult

BACKGROUND: The July 2018 Japan Floods caused enormous damage to western Japan. Such disasters can especially impact elderly persons. Research has shown that natural disasters exacerbated a decline in cognitive function, but to date, there have been no studies examining the effects of this disaster on the elderly. The object of this study was to reveal the effect of this disaster in terms of cognitive decline among the elderly. METHODS: Study participants were certified users of the long-term care insurance (LTCI) system in Hiroshima, Okayama, and Ehime prefectures from May 2018 to June 2018. The observation period was from July 2018 to December 2018. Our primary outcome was cognitive decline after the disaster using a dementia symptomatology assessment. In addition to a crude model, a multivariate Cox proportional hazards model was used to assess the cognitive decline of victims, adjusting for age classification, gender, the level of dementia scale before the disaster occurred, residential environment, whether a participant used facilities shut down after the disaster, and population density. After we confirmed that the interaction term between victims and residential environment was statistically significant, we stratified them for the analysis. RESULTS: The total number of participants was 264,614. Victims accounted for 1.10% of the total participants (n = 2,908). For the Cox proportional hazards model, the hazard ratio of the victims was 1.18 (95% confidential interval (CI): 1.05-1.32) in the crude model and 1.12 (95% CI: 1.00-1.26) in the adjusted model. After being stratified by residential environment, the hazard ratio of home victims was 1.20 (95% CI: 1.06-1.36) and the hazard ratio of facility victims was 0.89 (95% CI: 0.67-1.17). CONCLUSIONS This study showed that elderly living at home during the 2018 Japan Floods were at risk for cognitive decline. Medical providers, care providers, and local governments should establish a system to check on the cognitive function of elderly victims and provide necessary care support.
Aged ; Cognitive Dysfunction/etiology* ; Floods ; Humans ; Insurance, Long-Term Care ; Japan/epidemiology* ; Retrospective Studies

To investigate the effects of the expression of flavonoid 3' hydroxylase gene ( and active ingredients in under flooding stress, we cloned F3'H from Hangju (temporarily named ) and conducted bioinformatics analysis. During the flower bud differentiation stage, we flooded the and then used the Real-time PCR to detect the relative expression of ; Finally, active ingredients of the inflorescence were measured by HPLC.The sequencing results showed that 1 562 bp sequence was acquired with the largest open reading frame of 1 527 bp, which encoded 508 amino acids. The phylogenetic tree found that was highly homologous to other species of Compositae. Real-time PCR results showed that had a significant response to flooding stress and had the highest expression level after flooding for 24 h, which was about 9 times as that of the control group. The results of HPLC showed that luteolin and luteoloside, the downstream products catalyzed by the F3'H, were significantly higher than those in the control group. It was also found that the contents of chlorogenic acid and 3,5- acid were also significantly higher than those of the control group. Therefore, regulates the synthesis of downstream products by regulating the expression of in the flavonoid synthesis pathway under flooding stress, thereby responding to flooding stress. The flooding stress during flower bud differentiation can significantly enhance the accumulation of active ingredients.
Chrysanthemum ; enzymology ; genetics ; Cloning, Molecular ; Cytochrome P-450 Enzyme System ; genetics ; Floods ; Gene Expression Regulation, Plant ; Glucosides ; biosynthesis ; Luteolin ; biosynthesis ; Phylogeny ; Plant Proteins ; genetics ; Stress, Physiological

OBJECTIVETo establish a public health risk assessment indexes for flood disaster.

METHODSDelphi method and expert consultation were used to establish the public health risk assessment index system and scoring criteria, and the analytic hierarchy process (AHP) method was used to obtain the weight of the indexes. Then, the established index system was applied to evaluate the public health risk of the flood disaster in Anhui province, 2016.

RESULTSA public health risk assessment system consisting of 5 categories and 17 indexes was constructed. The assessment result of the flood disaster in Anhui province of 2016 showed that the public health risk score was 0.26, suggesting that "the health emergency measures were effective, and the public health risks were effectively controlled".

CONCLUSIONSThe established indexes can effectively assess the health risk of flood disaster and also can provide the reference for other disaster assessment.

Disasters ; Floods ; Risk Assessment

OBJECTIVES: This study was conducted to estimate the prevalence of psychosocial problems among residents of four flood-prone barangays in Manila located along the Maricaban-Malibay creek in Pasay City and were reported to have experienced 10-15 feet-deep flood waters simultaneously caused by Typhoon Maring and the southwest monsoon in August 2013.
METHODOLOGY: A stratified two-stage random cluster sampling method, adapted from the Community Assessment for Public Health Emergency Response (CASPER) Toolkit, was employed in the syudy. The first stage of sampling used street clusters, with more or less of the same size, as the primary sampling unites (PSU) and households as secondary sampling units (SSU) to select the households that will be included in the survey. Since the clusters were more or less of the same size, they ahd equal chances of being selected in the study if the probability of selection is proportionate to size (PPS). Seven houses were then randomly chosen from the 30 selected clusters. All of the househol heads from the 210 selected households were given several copies of the self-administered questionnairescalled the Self-Reporting Questionnaire-20 (SRQ-20), a screening tool developed by WHO, to determine the psychosocial condition of the household members 12-65 years.
RESULTS: The prevalence of psychosocial distress in this population was estimated at 17% (95%CI=13.7-20.3%). The residents of the study barangays were in their rehabilitation phase i.e., three months post disaster when data was collected for this study. The study also characterized the households in the sample according to socio-economic status, presence of members with special needs, and presence of children 0-5 years ol. In the aftermath of the disaster, 46.84% of the respondents had positive answer on the group of questions about decreased energy, 49.8% on somatic symptoms,25.89% on depressive thoughts and 40.91% on depressive moods.There was a higher prevalence of these 4 factors among females, those separated, with low socioeconomic status and low educational attainment.
CONCLUSION: The estimated prevalence of psychosocial distress was 17% (95%CI=13.7%-20.3%), In the aftermath of the disaster, 46.8% of the respondents had positive answer on the group of questions about decreased energy, 49.8% on somatic symptoms, 25.9% on depressive thoughts and 40.9% on depressive moods.

Human ; Male ; Female ; Depression ; Anxiety ; Stress Disorders, Post-traumatic ; Cyclonic Storms ; Floods

OBJECTIVES: This study was conducted to estimate the prevalence of psychosocial problems among residents of four flood-prone barangays in Manila located along the Maricaban-Malibay creek in Pasay City and were reported to have experienced 10-15 feet-deep flood waters simultaneously caused by Typhoon Maring and the southwest monsoon in August 2013.
METHODOLOGY: A stratified two-stage random cluster sampling method, adapted from the Community Assessment for Public Health Emergency Response (CASPER) Toolkit, was employed in the syudy. The first stage of sampling used street clusters, with more or less of the same size, as the primary sampling unites (PSU) and households as secondary sampling units (SSU) to select the households that will be included in the survey. Since the clusters were more or less of the same size, they ahd equal chances of being selected in the study if the probability of selection is proportionate to size (PPS). Seven houses were then randomly chosen from the 30 selected clusters. All of the househol heads from the 210 selected households were given several copies of the self-administered questionnairescalled the Self-Reporting Questionnaire-20 (SRQ-20), a screening tool developed by WHO, to determine the psychosocial condition of the household members 12-65 years.
RESULTS: The prevalence of psychosocial distress in this population was estimated at 17% (95%CI=13.7-20.3%). The residents of the study barangays were in their rehabilitation phase i.e., three months post disaster when data was collected for this study. The study also characterized the households in the sample according to socio-economic status, presence of members with special needs, and presence of children 0-5 years ol. In the aftermath of the disaster, 46.84% of the respondents had positive answer on the group of questions about decreased energy, 49.8% on somatic symptoms,25.89% on depressive thoughts and 40.91% on depressive moods.There was a higher prevalence of these 4 factors among females, those separated, with low socioeconomic status and low educational attainment.
CONCLUSION: The estimated prevalence of psychosocial distress was 17% (95%CI=13.7%-20.3%), In the aftermath of the disaster, 46.8% of the respondents had positive answer on the group of questions about decreased energy, 49.8% on somatic symptoms, 25.9% on depressive thoughts and 40.9% on depressive moods.

Human ; Male ; Female ; Middle Aged ; Adult ; Young Adult ; Adolescent ; Prevalence ; Cyclonic Storms ; Floods ; Medically Unexplained Symptoms ; Family Characteristics ; Social Class ; Disasters ; Probability

OBJECTIVE: This study assessed the knowledge, attitudes and practices of the community residents on the prevention and control of Leptospirosis in the National Capital Region, Philippines.
METHODS: In this cross-sectional study, four-stage random cluster sampling proportional to size was used to select the 413 respondents from 30 villages in the National Capital Region. The mother or any responsible adult served as the respondent for the community survey which yielded data on the knowledge, attitudes, domestic practices, and sources of information for the prevention and control of Leptospirosis. Encoding was done using Epi Info Version 6. Descriptive statistics was generated through Microsoft Excel.
RESULTS: Majority of the respondents were able to correctly identify that the causative agent of leptospirosis is bacteria (91%), that the disease is transmitted by the urine of infected of rats (89%) through skin abrasions (71%) and mucous membranes (57%). Most commonly identified signs and symptoms of the disease include acute febrile illness with myalgia (87%), difficulty of breathing and decreased urine output (72%). Majority identified the prevention and control measures correctly. Wearing of boots, maintaining a clean and orderly house and maintaining good sanitation were the top answers of the respondents. In terms of attitudes, respondents had positive attitudes towards the preventive practices of wearing boots or following health advisories of authorities (99%). Majority also believed that leptospirosis is curable if detected early (99%) and that it is a serious disease (98%). Similarly, more than 90% had positive attitude when it comes to health care. Wading in flood waters (93%), walking barefoot (85%) and conducting clearing activities after flood (63%) were the commonly believed forms of exposure to the disease. In terms of domestic practices, respondents usually clean their surroundings (40%), avoid wading in floodwaters (25%), wear boots (21%) to protect themselves from acquiring leptospirosis. Primary sources of information on leptospirosis were the mass media (46%), health workers (17%) and the health facilities (14%). The most common educational materials read by the respondents were flyers (9%), posters (8%), and leaflets (7%).
CONCLUSION: In general, majority of the respondents were knowledgeable on the causes, signs and symptoms, and modes of transmission of leptospirosis, and had favorable attitudes towards the prevention and control measures against leptospirosis. However, when it comes to domestic practices, less than 40% actually implement measures for the prevention and control of leptospirosis. Respondents' main source of information was the mass media and very few have read educational materials containing information about the prevention and control of leptospirosis. 

Human ; Animal ; Male ; Female ; Bacteria ; Rodentia ; Jaundice ; Leptospirosis ; Abnormalities, Multiple ; Cross-sectional Studies ; Floods ; Health Facilities ; Health Personnel ; Limb Deformities, Congenital ; Mucous Membrane ; Myalgia ; Philippines ; Rats ; Sanitation ; Surveys And Questionnaires ; Attitude ; Urine

Data trends show that climate is changing and several researches have shown the adverse effects of climate change to human health. This review presents how climate change affects human health. Climate change can influence the nature and severity of climate-related natural disasters such as flooding and drought, hence, increasing the rate of mortality and morbidity among human population. Climate change can also increase the likelihood of infection in humans by way of affecting the transmission of infectious diseases. Climate-induced food insecurity is also one of the consequences of climate change and this may eventually result in malnutrition and famine. There are both direct and indirect consequences of climate change to human health. First, the direct health impacts such as injuries and deaths associated with climate-induced natural disasters, and second, the indirect health impacts such as food insecurity, contaminated source of water, and increased incidence of diseases.

Human ; Climate ; Climate Change ; Disasters ; Droughts ; Floods ; Food Supply ; Incidence ; Morbidity ; Starvation ; Water ; Health ; Environmental Health

OBJECTIVETo investigate the changes of water level and the distribution of snails in Anhui province before and after runs of the Three Gorges Reservoir Project, and to determine the relationship between the two factors and schistosomiasis transmission.

METHODSThe hydrologic data of Datong hydrologic station and the data of snail status and schistosomiasis morbidity in Anhui Province were collected. The data from 1991 to 2002 and 2003 to 2012 were considered as before and after the impoundment of the Three Gorges Reservoir Project. Based on the prevalence of schistosomiasis, the cases of people and cattle were speculated, and the average infection rate of people and cattle were calculated. The t-test was used to compare the difference of snail area and the density of living snails before and after the impoundment of the Three Gorges Project. The pearson method was used to analyze the relationship between water level and snail area. The spearman method was used to analyze the relationship between the water level and the distribution of snails.

RESULTSFrom 1991 to 2012, the range of the highest water level, the lowest water level, the difference between the highest and lowest water level, the mean in the abundant water seasons, the mean in the dry water seasons, and the difference between the abundant water seasons and the dry water seasons was 11.40-16.30, 3.68-5.20, 6.70-12.12, 9.92-14.40, 4.77-7.64 and 4.13-8.93 m, respectively. The snail areas was (28 613 ± 362) hm² and (29 477 ± 918) hm² (t = -3.00, P = 0.007), the density of living snails was 1.51 (1.15-2.43) and 0.43 (0.29-1.10) snails/0.11 m² (H = 4.28, P < 0.001) before and after the impoundment of the Three Gorges Project, respectively. The average infection rate of people and cattle was 1.68% (99 482/5 935 147) and 4.62% (13 923/3 011 33), and the average number of acute schistosomiasis cases was 328, before the impoundment of the Three Gorges Project; 0.60% (39 747/6 649 380), 1.65% (1 291/783 224) and 71 after the impoundment of the Three Gorges Reservoir Project, respectively. The snail areas had negative correlation with the highest water level, the difference between the highest and lowest water level, the mean in the abundant water seasons (r value was -0.514, -0.509 and -0.477; P value was 0.014, 0.015 and 0.025, respectively). The infection rate of people had positive correlation with the highest water level, the difference between the highest and lowest water level, the mean in the abundant water seasons (r value was 0.532, 0.587 and 0.446; P value was 0.011, 0.004 and 0.038, respectively). The infection rate of cattle had positive correlation with the highest water level, the difference between the highest and lowest water level (r value was 0.507 and 0.553; P value was 0.016 and 0.008, respectively). The number of acute schistosomiasis cases had positive correlation with the highest water level, the difference between the highest and lowest water level (r value was 0.481 and 0.486; P value was 0.023 and 0.022, respectively).

CONCLUSIONFollowing the runs of the Three Gorges Reservoir Project, the change of water level in the section of Anhui Province affected the distribution of snails and the infection of people and cattle to some extent. The snail areas showed an upward trend, and the density of living snails, the infection rate of people and cattle showed a downward trend. The runs of Three Gorges Reservoir Project has certain role to reduce flood and helpful for schistosomiasis control.

Animals ; Cattle ; China ; Floods ; Humans ; Lakes ; Prevalence ; Rain ; Schistosomiasis ; Seasons ; Snails