Poverty levels can remain the same while those who rise out of poverty are replaced by others. The transient poor and chronic poor differ in each society. In a nine-year period ending in 2005 for the US, 50% of the poorest quintile transitioned to a higher quintile. Global prevalence
According to Chen and Ravallion, about 1.76 billion people in developing world lived above $1.25 per day and 1.9 billion people lived below $1.25 per day in 1981. In 2005, about 4.09 billion people in developing world lived above $1.25 per day and 1.4 billion people lived below $1.25 per day (both 1981 and 2005 data are on inflation adjusted basis). The share of the worlds population living in absolute poverty fell from 43% in 1981 to 14% in 2011. The absolute number of people in poverty fell from 1.95 billion in 1981 to 1.01 billion in 2011. The economist Max Roser estimates that the number of people in poverty is therefore roughly the same as 200 years ago. This is the case since the world population was just little more than 1 billion in 1820 and the majority (84% to 94%) of the world population was living in poverty. According to one study the number of people worldwide living in absolute poverty fell from 1.18 billion in 1950 to 1.04 billion in 1977. According to another study, the number of people worldwide estimated to be starving fell from almost 920 million in 1971 to below 797 million in 1997.
A major proportion of aid from donor nations is tied, mandating that a receiving nation spend on products and expertise originating only from the donor country. US law requires food aid be spent on buying food at home, instead of where the hungry live, and, as a result, half of what is spent is used on transport.Distressed securities funds, also known as vulture funds, buy up the debt of poor nations cheaply and then sue countries for the full value of the debt plus interest which can be ten or 100 times what they paid. They may pursue any companies which do business with their target country to force them to pay to the fund instead. Considerable resources are diverted on costly court cases. For example, a court in Jersey ordered the Democratic Republic of the Congo to pay an American speculator $100 million in 2010. Now, the UK, Isle of Man and Jersey have banned such payments. Reversing brain drain
The loss of basic needs providers emigrating from impoverished countries has a damaging effect. As of 2004, there were more Ethiopia-trained doctors living in Chicago than in Ethiopia. Proposals to mitigate the problem include compulsory government service for graduates of public medical and nursing schools and promoting medical tourism so that health care personnel have more incentive to practice in their home countries. It is very easy for Ugandan doctors to emigrate to other countries. It is seen that only 69% of the health care jobs were filled in Uganda.