The epidemiology of dengue has undergone profound changes in recent years, due to several factors such as expansion of the geographical distribution of the insect vector, increase in traveling, and demographic pressure.
However, despite the acknowledged advantages of mobility, transhumant practices in Sudano-Sahelian and Sudano-Guinean zones are facing increasing challenge in the context of demographic pressure, leading to the encroachment of cultivated fields into grazing areas and livestock corridors which constrains the mobility of animals (Ayantunde et al. 2014).
The demographic pressure is particularly acute in London, due to inward migration and increasing numbers of people no longer leaving the capital when they have children.
Porritt agrees that most of the expected increase will be caused by immigration, "plus a bit of demographic pressure".
Turning to demographic variables, demographic pressure shows a positive, but insignificant relation with migration, while a one percent increase in the sending countries' population is associated with a 0.8percentt decrease in emigration.
Germany has gone further than France, probably because it is under more intense demographic pressure.
Further analysis shows that demographic pressure was independent of manorialisation.
"High levels of poverty and demographic pressure are main drivers.
The drivers of armed conflict are evolving, and now include such factors as climate change, demographic pressures and increased disparities in access to essential services and protection among population groups.
Greenspan called such a debt increase sobering, given the demographic pressures.
Reasons for increases are manifold however demographic changes, increasing pressure on emergency department services, policy changes (e.g. emergency department waiting time targets) and evolving medical practices (e.g. increasing use of day-case surgery) are contributing factors [ 1].
