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Trends of HIV/AIDS Epidemic and Awareness Levels in Bangladesh

This paper observes the level and trends of HIV/AIDS epidemic and its awareness in Bangladesh. The HIV/AIDS prevalence rate in Bangladesh is 0.01% and in compared to other neighboring countries Bangladesh has least prevalence. The trend of HIV/AIDS prevalence in Bangladesh is increasing. The highest prevalence rate is found in Nepal and its trend is found decreasing over the years. The trend of number of death due to AIDS in Bangladesh is increasing. The estimated number of death due to AIDS in Bangladesh is 68in 2001 which is gradually increasing and in 2015 it stands at 868. The highest number of death due to AIDS is found in Pakistan and its trend is also increasing. The theoretical trend of HIV/AIDS prevalence in Bangladesh forecast that the prevalence rate will be 0.021%in 2020. The trend of HIV/AIDS awareness level in Bangladesh is found to be increasing over the year. The awareness level in Bangladesh is about 80% in 2014 among which male are 90% and female are 70%. Finally, from the result of the present study it can be conclude that with the increase of the awareness level the number of new HIV infection in Bangladesh tends to decrease.


Introduction
The first case of HIV/AIDS epidemic recognized internationally in 1981 [1], but in Bangladesh the first case was detected in 1989 [2]. Prior to this first case, the government of Bangladesh (GoB) initiated early response to fight against this epidemic in 1985 [2,3]. Since the spread of HIV/AIDS epidemic, Bangladesh has experienced a large number of HIV/AIDS infections, deaths and also gathering intervention strategies and implementing prevention program. In 2014, a total of 433 new cases of HIV infection, 251 new AIDS cases, and 91 deaths due to AIDS were reported (BDHS 2014) in Bangladesh [4]. The number of HIV-positive people in Bangladesh was 1,207 in 2007 [2], which increase to 3,674 in 2014 (BDHS 2014) [4]. The estimated number HIV/AIDS case remains at 8,900 in Bangladesh. Although, Bangladesh is still considered as a low-prevalence country for HIV/AIDS epidemic [5], it remains vulnerable to an HIV epidemic because of the high prevalence in the neighboring country. The awareness about HIV/AIDS is very important to prevent the deadly consequence of the disease. Nowadays, the awareness in Bangladesh is rising [6,7,8] and males are more aware than females [9,10]. To understand the level and trends towards the HIV/AIDS epidemic and awareness, this research tries to illustrate some graphical representation of the level and trends of the HIV/AIDS epidemic and it's awareness in Bangladesh. The trend of number of new HIV infection was rising until 2008 but with the increase of the awareness of HIV/AIDS the trend of number of new HIV infection is now decreasing in Bangladesh. The number of new HIV infection in Pakistan is high compared to other neighboring countries and its trend increasing over the years.

Data Collection
The data for this research have been extracted from Bangladesh Demographic and Health survey-2014(BDHS 2014) and UNAIDS. For the convenience of the research the country India is not included as India has too much high prevalence rate compared to other South Asian countries.

Data Analysis
A time series may have faster (or slower) increase at early stage and have a slower (or faster) increase at more recent time. In such a case better description of the time series is given by a non-linear cause rather than straight line. Here we used a parabolic trend by a second degree polynomial equation obtained by the method of least squares. We used descriptive statistics, graphs and time series and time series analysis for data analysis. To estimate the parameter and drawing the figures, the statistical package for social science (SPSS) version 20 and Microsoft Excel 07 is used.

Results and Discussion
The prevalence of HIV/AIDS in Bangladesh While most of the countries in the world experiencing a high prevalence rate in HIV/AIDS epidemic and its consequences, Bangladesh is still in the situation of low prevalence, which is a great success of the government of Bangladesh (GoB) and obviously its population. This is due to early response of the Gob against this epidemic. The current estimates suggest that the HIV prevalence rate is less than 1% among the groups of most-at-risk population in Bangladesh. The prevalence of HIV is now monitored annually among these groups at sentinel site across the country. In Bangladesh these most at risk groups are the representative of the HIV/AIDS epidemic related information, as the HIV risk in general people are very low in number. Where the prevalence rate in Bangladesh is 0.01%, the prevalence rate in neighboring country India is 0.34% [11] and in Nepal this rate is 0.2% [12], which is relatively very high with respect to Bangladesh. The HIV/AIDS prevalence in Bangladesh is listed and shown in the figure below. From the above figure it is observed that the prevalence of HIV/AIDS is increasing over the years. In early 1991 the prevalence was only 0.0001% [12,13] which is very potty but with time the HIV/AIDS prevalence is increasing gradually. At the end of 2014 it stands at 0.0092% which is near to 0.01% [14]. Hence from the above figure we can conclude that the HIV/AIDS prevalence in Bangladesh has an increasing trend. As a comparative study we have listed the HIV/AIDS prevalence rate in different neighboring countries and shown in the figure below. From the above figure see that the highest prevalence rate was in Nepal (0.3416%) in 2005 which is decreasing over the years and the increasing trend is found in Pakistan where other countries have stable trend. The prevalence rate of HIV/AIDS in Bangladesh is 0.0085% (in 2015) and if we see the prevalence rate in other neighboring countries the rate in Nepal is 0.206%, 0.0395% in Afghanistan, 0.0928% in Pakistan and 0.0347% in Sri Lanka. Figure 2 shows that compared to other South Asian countries Bangladesh has very low HIV/AIDS prevalence rate.
According to UNAIDS report, the estimated number of AIDS related death in Bangladesh in 2001 is 68 which is gradually increasing and in 2015 it stands at 868 [5]. A table of estimated number of death due to AIDS in Bangladesh is given below  2002  98  2007  413  2012  762  2003  139  2008  496  2013  806  2004  194  2009  541  2014  834  2005  262  2010  621  2015  868 From table 1 we see that in 2001 the number of death due to AIDS was 68 but in 2015 it increases to 868 in Bangladesh. A graphical representation of HIV/AIDS related data provided by UNAIDS is given in the diagram below From Figure 3 observe that the number of death due to AIDS in Bangladesh follows an increasing trend.
The data of death due to AIDS in different South Asian countries have been extracted from the UNAIDS spectrum estimate. A graphical representation of the death due to AIDS in different South Asian countries is given below: When compare the number of death due AIDS in Bangladesh with other neighboring counties, it seems that Bangladesh is steel in good position but not out of danger [11]. From the Figure 4 see that, in Nepal the number of death due to AIDS increased in a slide amount but it started to decrease from 2011 to yet. In Pakistan the number of HIV/AIDS related death is increasing vulnerably. The number was 762 in 2005 but at the end of 2015 it increases to 3,642. In Bangladesh the number of death in 2000 was 262 but the number is increasing with a steady manner and now it is 868. The minimum number of death due to AIDS is found in Sri Lanka. The number of people living with HIV in Bangladesh is increasing day by day. Although, the Government of Bangladesh provides the support and service to the most at risk groups, the dickens of this deadly epidemic does not leave its malefactor impact. Here in Bangladesh, the general population has a different view to the people who have HIV positive status, and are thrown away from the society [11], as there are some misconceptions among the people in Bangladesh and also lack of knowledge about HIV/AIDS [15]. The general misconceptions among the people that it is risky to walk, sharing food, use bathroom together and hugging with HIV infected person. A short list of number of people living with HIV is given below.   [5]. If we see the epidemic in Nepal, the number of people living with HIV is 39,000 and women aged 15 and up is estimated 13,000 and the children estimated as 2,000. If compare the people living with HIV/AIDS by sex, we observe from figure 6 that males are more infected than females [8]. Although, awareness in males are high [16] but the prevalence among them is high compared to females. This may be by the cause that males are three times more vulnerable to transmission of this epidemic than females [17]. Among the males who sex with males and also exposed to anal sex are more vulnerable to spread of this pandemic, which facilitate the spread of HIV virus in very easy way [18,19,20].   1992  20  2000  355  2008  1242  1993  27  2001  491  2009  1238  1994  42  2002  669  2010  1225  1995  58  2003  802  2011  1218  1996  82  2004  923  2012  1154  1997  122  2005  1047  2013  1065  1998  172  2006  1090  2014  1021  1999  249  2007  1171   The table 3  Pakistan. Compared to both of these neighboring country Bangladesh is still a low prevalence country, but the risk of spreading this epidemic is still high as the our neighboring country India is world 3 rd largest HIV/AIDS prevalence country.

Figure 8. Number of new HIV infection in different South Asian counties.
It is quite good for the Bangladesh that the number of new infection of HIV/AIDS is decreasing. If compare with different neighboring countries and figure 8 shows that it is seems that, the number of new infection is high in Pakistan and the low new infectious country is Sri-Lanka but a significant decrement is found in Nepal, it start with 5,445 in 2005 but at the end of 2015 it decreases to 1,331. In this context Bangladesh has gained also a significant improvement that, in 2005 the number of new infection was 1,128 which decreases to a little amount to 1,070 in 2015. The number of new HIV infection decreased is little but is great news for Bangladesh. Hence, can say that with compared to other country Bangladesh is still in a good position. The Government of Bangladesh as well as its people needs to be careful about this pandemic to reduce the number of new infection as well as to get rid of this dangerous disease.

Theoretical trends of HIV/AIDS epidemic in Bangladesh
HIV in Bangladesh has continued to remain at relatively low levels in the most at risk population groups [21]. The early and sustained HIV prevention programs targeting high risk groups backed by a state-of-the-art surveillance system is found to be the main reason for the low prevalence in Bangladesh [22]. The trend line show in Figure 9 is a quadratic trend representing the current and future trends towards the HIV prevalence in Bangladesh. Since the levels of HIV/AIDS by yearsis highly skewed, 2 nd degree polynomial curve has been displayed instead of linear curve.  The Figure 9 shows that the current prevalence rate of HIV/AIDS epidemic is less than 0.013% but in 2020 it may rise up to 0.021%, which is not a good sign for Bangladesh. So the GoB should need to take further action to avert such type of pandemic. Since the level of the number of the people living with HIV/AIDS is highly skewed, a second degree polynomial is fitted to obtain the expected number of people living with HIV in Bangladesh; the equation used here is as follows 2691.61 470.09 * 13.797 * The solution of the above equation is given below Globally, the HIV/AIDS epidemic claimed more than three million lives in 2001, and an estimated five million newly acquired HIV [23]. There are now 42 million people living with the virus [5]. South Asia accounts for 10 percent of these numbers [24]. In Bangladesh, the trend line in figure 10 shows that in 2014 the number of people living with HIV is 8772, in current i.e. in 2016 the number of living people is 10,319 and in 2020 it will arrive at 13,745.
All over the world the number of new HIV infections is increasing day by day.
In Bangladesh, the trend of new HIV Infection mentioned in figure 11 shows that the number of new infection was raising steadily up to 2014 which amount 1178, but after this period the trend line changes its direction and going downwards. Since the level of HIV new infection is highly skewed by years, a second degree polynomial is considered to make a possible trend line. The equation considered here is Y i =773.73+76.563*t-3.615*t 2 And the solution for different year is given below The table 4 contains the information regarding the theoretical trend of HIV new infection in Bangladesh The graphical representation of the trend of HIV new infection is shown below The amount showed by trend line is approximately nearly to the amount estimate by the UNAIDS spectrum estimates. From the trend line it can be said that in 2016 and 2018 the number of new infection will be 1172 and 1137 respectively. And finally it can be said from the aforesaid figure that in 2020 the number of new HIV infected people will be 1073, which is a good indication that the trend of number of new HIV infected people is decreasing and hope, will diminish completely from Bangladesh.

Trends of HIV/AIDS awareness in Bangladesh
Since 1987, when there is no identified case in Bangladesh [25,26,27], the Government of Bangladesh (GoB) has been implementing HIV prevention program through awarenessraising activities. Over the year, the HIV program has grown in size and quality has involved a wider network of stakeholders. The program has increased its coverage of most-at-risk populations, which now include young people. There have been various efforts to prevent HIV transmission, such as public health education through the media and program activities by both government and NGOs, particularly with groups considered to be at high risk for transmission of HIV/AIDS. To understand the patterns of awareness of HIV/AIDS straightforwardly, the levels over different time points are displayed in the figure 12. From the figure 12 see that in early 1996 the awareness level in Bangladesh was very low, as the HIV pandemic was not posing threat in the country as well as over the world. But with the increase of the consequences of this epidemic, the administration and county policymakers enhance their strategies to raise the awareness among the most-at-risk population and general people specially the youth. As this response, the feedback was obtained a good result, and is still continuing with increasing awareness.
The value of for different value of is shown below The above figure 15 reveals that the from the initial stage, the trend of awareness is raising upward and it looks that awareness trends reach over the 80%, but in the tail of the trend line it seems to slight fall, which is not as expected.
Now illustrate a comparative study based on the awareness and its effect on the HIV/AIDS epidemic. As the awareness level is at percentage unit and the number of new infection is at thousands unit, convert both of them in a similar standard unit for best comparison and can easily draw out diagram. It facilitates to show the level in same standard form. To best understand the actual effect of HIV/AIDS awareness on HIV/AIDS epidemic draw a diagram based on the level of the awareness and new infection of HIV/AIDS. From the Figure 16 see that the level of awareness is rising steadily but the level of number of new infection fluctuates over the periods. In the period 2007-2011 it seems that the number of new infections was high but the awareness level is as usual position, this may be cause due to the world wide spread of HIV/AIDS epidemic in this decade. This obviously makes impact almost every country over the world. But in the last period, the level of the number of new infections is less than the level of awareness, which indicate that the number of new infections getting lower with the increase of the awareness. Finally, it can be conclude that awareness is most important for minimizing the impact of HIV/AIDS epidemic and its consequences. Hence the Government should need to increase awareness raising program and improve intervention strategies against this deadly epidemic.

Conclusion
This study examined the extent and determinants of HIV knowledge and awareness level of Bangladesh. This finding indicate that HIV prevention programs have a lot to improve in creating general awareness and clarifyingmisconception regarding mode of transmission of the disease. The HIV/AIDS prevalence rate in Bangladesh is 0.01%, which is very low compared to other countries in the world but it has an increasing trend. The trend of number of new HIV infection in Bangladesh has been decreasing since 2008 but prior to 2008 it had an upward trend. In 2008, the number of new HIV infection was 1,242 but in 2014 it reduces to 1,021. The overall awareness level in Bangladesh is 80% of which females are 70% and males are 90%. With the increase of the awareness level the number of new infection is seems to be decreasing. The theoretical trend also forecast that the number of people living with HIV and the number of new HIV infection in Bangladesh will be 13,745 and 1,073 respectively in 2020. The trend of HIV/AIDS awareness level in Bangladesh is found to be increasing over the year.