The major health problems affecting pregnant women in sub-Saharan African are anaemia, malaria and HIV. A case-control study aimed at determining the prevalence of malaria, anaemia and HIV status among women of reproductive age between 20-49 years attending General Hospital, Onitsha was conducted. Blood samples of three hundred and sixty-two apparently healthy gravid women attending antenatal and 181 non-gravid apparently healthy women in Onitsha were recruited using random sampling method. A structured questionnaire was used for data collection. Haemoglobin was estimated using automated method, Malaria, diagnosed microscopically using gold standard staining method and HIV screened using qualitative immunochromatographic method, confirmed molecularly. Statistical analysis was done using SPSS version 21. Results revealed that out of the 362 pregnant test groups,125 (34.5%) had malaria parasite (mp) in their blood and were anaemic 53(37.6%) though fewer in control groups ;23,14 (12.7%; 16.1%) (p = 0.195; p =0.055). Out of 347 HIV sero-negative pregnant women, 110 (31.7%) tested HIV positive when confirmed by PCR molecular method while only 1(0.6%) sero-negative controls were confirmed positive with molecular method with statistical significance observed in the test and control groups (p = 0.000; p = 0.000). However, as pregnancy affects HIV serology testing, it is necessary to use molecular method to increase its sensitivity and more enlightment programmes on the importance of balanced diet, compliance to Malaria control and routine gynecological drugs intake in pregnant women.
Plant diseases accounts for huge losses in agriculture. To ensure food security and sustainability, an agricultural yield must be improved to meet the growing world population. Due to growing awareness of the effect of pesticides and herbicides on human health and the environment, an alternative safe method of controlling phytopathogens has become a subject of intense research. Biological control of plant diseases is the use of living organisms to suppress or inhibit plant pathogens. Microbiological control agents (MBCAs) employ microorganisms to protect crops from destruction by phytopathogens through different modes of action. They may act by direct interaction with the pathogens through hyperparasitism. Indirect antagonistic interaction with the pathogen through induction of host resistance and priming is another mode of attack by MBCAs. Competition for nutrients and space is another important indirect mode of attack by which MBCAs suppress the growth of pathogens through nutrient deprivation. The MBCAs can also interact with the plant through secretion of antibiotics or antimicrobial secondary metabolites with inhibitory effect against the pathogens. A clear understanding of the mode of action of MBCAs is vital to achieving a successful biocontrol operation as well as improving the biocontrol process that is devoid of risks to humans and the environment. Such improvement could be achieved through the use of microbial consortia to enhance the stability and efficiency of the biocontrol process. Further studies on aspects of mass production and formulation to produce more effective, stable, safer and cost effective MBCAs are needed.
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