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Explain about the Pulse vaccination?
How many doses of a given vaccine, administered to what people and on what schedule, permit eradication or control of an infectious disease? Classical models referred just the effects of constant rates of vaccine administration. Inspired in part by the logistical and educational problems denoted by dispersed populations in developing countries, vaccine programs have turned to pulse vaccination strategies in which large cohorts of susceptible children are vaccinated in a period of days to weeks. Mathematical models of pulse vaccination illustrates that in addition to its logistical advantages, pulse vaccination may assist eradicate disease by driving disease for the moment to extremely low levels and by synchronizing epidemics in different populations, permitting for stochastic extinction of disease in the whole population.
Upwelling zones of high biological productivity are found along the western coasts of the major continents. What causes this upwelling? a- cold currents moving from the equator tow
Dextrin Polymers of D-glucose, formed due to partial hydrolysis of starch by enzymes.
Q. What is the digestive enzyme that acts within the stomach? Which type of food does it digest? What are the cells that produce that enzyme? The digestive enzyme that acts in
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Of which type of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue. The heart muscle is known as the my
Nicotinamide nucleotides These coenzymes are derived from the vitamin, niacin. They are of two types, nicotinamide adenine dinucleotide (NAD') and nicotinamide adenine dinu
Distribution of Stomata There are two parameters normally used for expressing the distribution of stomata. Stomatal frequency: The number of stomata per unit area
What is crossing over? How is meiosis related to this phenomenon? The Linked alleles for instance, A-b and a- B form the gametes A-b and a-B that maintain the linkage of the al
What is the criterion used to classify hosts as intermediate hosts or as definitive hosts? The criterion used to classify hosts as intermediate hosts or as definitive hosts is
How dissimilar are the swimming strategies in osteichthyes and in chondrichthyes? Why do sharks need to agitate their body to swim while bony fishes do not? Bony fishes have a
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