On 16 May 2009, Japan confirmed its first three cases of new influenza A(H1N1) virus infection without a history overseas travel, and by 1 June, 361 cases, owing to indigenous secondary transmission, have been confirmed. Of these, 287 (79.5%) were teenagers (i.e. between 10 19 years age). The reproduction number is estimated at 2.3 (95% confidence interval: 2.0, 2.6). average transmissions involving minors (those under 20 age) traced back infected 2.8. That is, can sustain transmission even...

We provide a family of ordinary and delay differential equations to model the dynamics tumor‐growth immunotherapy interactions. explore effects adoptive cellular on describe under what circumstances tumor can be eliminated. The possibility clearing tumor, with strategy, is based two parameters in model: rate influx effector cells IL‐2. critical rate, below which endemic does not exist, has been found. One use make predictions about dormancy.

The SIS model of Hadeler and Castillo-Chavez [9] with a constant transfer rate susceptibles into partially protected state has been modified to take account vaccination at birth. shows backward bifurcation (existence multiple endemic stationary states) for certain values parameters. Parameter ensuring the existence nonexistence equilibria have discussed. Local global stability investigated. minimum effort required eradicate infection determined.

Urban areas, with large and dense populations, offer conditions that favor the emergence spread of certain infectious diseases. One common feature urban populations is existence socioeconomic inequalities which are often mirrored by disparities in access to healthcare. Recent empirical evidence suggests higher levels associated worsened public health outcomes, including rates sexually transmitted diseases (STD's) lower life expectancy. However, reasons for these associations still...

This work aims mainly to study the impact of experiencing asymptomatic anthroponotic cutaneous leishmaniasis (ACL) infection on overall dynamics and outcomes disease. Therefore, a deterministic model for transmission ACL type SEAIS in human host SI sandfly populations is proposed mathematically analyzed. The shown be well-posed. Its equilibrium stability analyses are shown. analysis shows that has an ACL-free proven locally globally asymptotically stable if only R0<1. In addition, unique...

In this paper, we provide a family of ordinary and delay differential equations to describe the dynamics tumor-growth immunotherapy interactions. We explore effects adoptive cellular on model under what circumstances tumor can be eliminated. The possibility clearing tumor, with strategy, is based two parameters in model: rate influx effector cells, IL2. critical rate, below which endemic does not exist, has been found. One use make predictions about tumor-dormancy.

The aim of this work is to study the impact sex and gender disparity on overall dynamics influenza A virus infection explore direct indirect effect mass vaccination. To end, a deterministic SIR model has been formulated throughly analysed, where equilibrium stability analyses have explored. (i.e., in susceptibility recovery rate between females males) disease outcome basic reproduction number R₀ endemic prevalence investigated. Mathematical numerical show that disparities affect severity as...

Abstract The two hyper–endemic regions for Visceral Leishmaniasis (VL) in the world are located India and Sudan. These countries account more than half of world’s VL burden. regional risk factors associated with vary drastically per region. A mathematical model transmission dynamics is introduced parametrized to quantify infection Sudan via a careful analysis prevalence level control reproductive number, , metric often used characterize degree endemicity. Parameters, VL-epidemiology Sudan,...

Childhood obesity is a health emergency in many parts of the world including U.S. and, consequently, identifying local, regional or national intervention models capable, altering dynamics at scales that make difference remains challenge. The fact consumption healthful foods among most youth has yet to meet recommended nutritional standards highlights lack effective policies aimed addressing epidemic obesity. Mathematical are used evaluate roles socialization and school environment on diet...

In this paper, four different forms of a model to describe the dynamics autoimmune diseases (with emphasis on Guillain–Barré syndrome) are proposed. first two cases, immune response is supposed be linear, while in other cases it Holling type III form. case linear response, has basic reproduction number and shows forward bifurcation. However, nonlinear does not have positive equilibria do exist for range parameters. The stability analysis model's steady states been established. Our analytical...

Childhood obesity is a health emergency in many parts of the world including U.S. and, consequently, identifying local, regional or national intervention models capable, altering dynamics at scales that make difference remains challenge. The fact consumption healthful foods among most youth has yet to meet recommended nutritional standards highlights lack effective policies aimed addressing epidemic obesity. Mathematical are used evaluate roles socialisation and school environment on diet...

Eating behaviors among a large population of children are studied as dynamic process driven by nonlinear interactions in the sociocultural school environment. The impact food association learning on diet dynamics, inspired pilot study conducted Arizona Pre-Kindergarten to 8th grades, is used build simple population-level models. Qualitatively, mathematical studies highlight possible ramifications instruction, nutrition, and health at community level. Model results suggest that nutrition...

Hepatocellular carcinoma (HCC) is a universal problem. The risk factors for HCC could either be environmental or host-genetic-related. polymorphism of both FOXP3 (rs3761548) and BRAF (V600E) genotypes alleles was studied in 104 Egyptian patients 90 healthy subjects. There significant increase the frequency AC genotype group, while there decrease AA patient's compared to controls. CC completely absent control its 2 (1.92%) group. C allele significantly increased (93 = 44.7%) it 39 (22.4%)...

<p>This work aims to study the role of sex disparities on overall outcome influenza A disease. Therefore, classical Susceptible-Infected-Susceptible (SIS) endemic model was extended include impact dynamics infection which spreads in an open population with a varying size, and took potential lethality infection. The mathematically analyzed, where equilibrium bifurcation analyses were established. shown undergo backward at $ \mathcal{R}_0 = 1 $, for certain range parameters, is basic...

A deterministic model for the transmission dynamics of SIRS-type malaria in hosts and SI mosquito populations is proposed. The host population differentiated between naive, primary, secondary susceptible individuals. Primary infected individuals (and also recovered) are from each other according to their degree infectiousness. impact changing relative susceptibilities primary (with respect naive) on investigated. Also, infectiousness infected, recovered infected) studied.