1. Introduction
For several years, the issue of climate change has been a concern of governments, international organizations and many scientific entities. All sectors, especially health, are vulnerable due to their limited adaptation capacities and their great dependence on resources with high climate sensitivity [
1].
Areas without good health infrastructure, as in most developing countries, will be least able to prepare and cope with the situation without assistance [
2]. Indeed, climate change has a strong impact on health [
3].
According to the WHO, floods are increasing in frequency and intensity. They increase the risk of water-borne diseases and create breeding grounds for disease-carrying insects such as mosquitoes [
2]. They cause water pollution, thus leading to hygiene problems. Despite the measures undertaken at the international level to reduce the risks induced by climate change, they persist and negatively affect health systems. This situation has been demonstrated and confirmed in one of the latest IPCC reports for West Africa [
4]. However, key questions remain unanswered and the demand for further research, for example on the evaluation of implementation in countries, persists [
3].
Climate change has a direct impact on certain categories of diseases, especially vector-borne and water-borne diseases. In addition, the increase in precipitation increases the dissemination of infectious agents and the temperature promotes their growth, thus making waterborne or foodborne diseases very susceptible to climate change [
4]. Floods are increasing in frequency and intensity. They increase the risk of water-borne diseases and create breeding grounds for disease-carrying insects such as mosquitoes. They also cause drowning and physical trauma, damage housing and disrupt the delivery of care and health services [
2]. Togo shares the same difficulties as other states in the world and has undertaken strategies after ratifying the United Nations Framework Convention on Climate Change (UNFCCC) in 1995. This is how it developed several institutional documents following the latest report from the Intergovernmental Panel on Climate Change (IPCC) [
5].
Adhering to most mitigation plans, the impacts of climate change risks on health systems persist. There is therefore an urgent need for analyzes of the impacts of these risks in order to attract the attention of decision-makers and health service managers looking for solutions to avoid the worst in the future.
In Togo, very little work has been done in the knowledge of climate impacts on health systems. To this end, our contribution through this article is to analyze the impacts of climate change on buildings, personnel and the environment in health facilities in the Grand Lomé region.
3. Results
The literature has allowed us to identify several impacts relating to climate change as illustrated in the following tables:
Table 1.
Main categories of diseases linked to climate change.
Table 1.
Main categories of diseases linked to climate change.
Categories |
Impacts (diseases) |
Climatic factors |
Vector-borne diseases |
Malaria |
Flood, high heat |
Waterborne diseases |
Diarrhea, Cholera |
Flooding |
Heat and air related illnesses |
Meningitis, cardiovascular and cerebrovascular diseases, Acute bronchitis, pneumonia, Asthma, Bronchiolitis |
Drought, high heat |
Accidents |
Injuries, deaths |
Strong winds |
Health personnel or workers |
Fatigue, Cramps, Panic, Heatstroke, Lack of alertness and increase in work accidents (injuries), Low productivity, mental health disturbance (physical discomfort=emotional state), Lateness, Delays, Stress, dehydration, kidney infections |
Flooding, high heat |
Considering the environmental effects,
Table 2 gives examples of damages linked to climate change.
According to
Table 3, 76.92% of respondents confirm the excess rainfall currently causing flooding; 69.23% for the delay in the start of the rains; 92.31% break of rains in high season and 53.85% confirm early cessation of rains.
Regarding current temperatures, 84.62% speak of extreme heat; for the winds, 76.92% notice them becoming more and more violent and 100% attest to the remarkable advance in sea level.
Addressing the causes of climate change, 100% of those interviewed say that they are due to deforestation, 92.31% speak of the emission of greenhouse gases, for 76.92% of those interviewed it is climate anomalies, for 46.15% of respondents it is non-compliance with specifications, 30.77% say it is non-compliance with social prohibitions and 15.38% speak of disobedience to a divinity.
According to
Table 4, 92.31% of those interviewed are aware that climate change has impacts on health personnel, 84.62% on the environment and 84.62% on buildings.
By addressing the different types of effects suffered by health facility buildings, it appears that 69.7% of respondents in the Golfe district compared to 73.17% in that of Agoé Nyvé say that climate change affects efficiency. , the lifespan and safety of infrastructure and buildings; 42.42% against 80.49% speak of the subsidence of the structures; 46.97% against 31.71% address power cuts; 51.52% against 29.27% talk about the corrosiveness of materials; 46.97% versus 68.29% mention the removal of roofs and 40.91% versus 73.17% speak of the flooding of buildings by water; 40.91% against 31.71% say that the high aggressiveness on the materials used for construction is noted; 50% against 29.27% talk about the coating of the reinforcements becoming greater because of the salinity of the air; 69.7% against 78.05% talk about the cracking of the protection slabs and 56.06% against 80.49% say that humidity/mold is noticed in the buildings.
These results support [
16] which notes that 12 cases of damage were reported in the health district of Agoé Nyvé and 144 in that of Golfe, i.e. a total of 156 roof removals which caused 7 cases of death in the district. health center of Agoé Nyvé and 5 in that of Golfe. Regarding damage to buildings, 29 cases were recorded in the Gulf prefecture during the same period [
16]. This shows that the risks identified in the Grand Lomé region affect the efficiency, lifespan and safety of infrastructure and buildings.
Addressing the effects of climate change on the environment (water - soil - air), 83.33% of surveys in the Golfe district confirmed their existence compared to 82.61 in that of Agoé Nyve, an average of 83.04 % in the Grand Lomé region. According to the results, for the degradation of the distribution network systems (e.g. electric power, water, gas, etc.), the following percentages were obtained: 60.61% in the Gulf district and 56.52% in the by Agoé Nyvé; for air pollution 66.67% against 56.52%; water pollution 62.12% against 34.78%; unsanitary environment of the health facility 53.03% against 54.35%; proliferation of insects and rodents (mosquitoes, flies, rats, etc.) 60.61% versus 43.48% and for mosquito bites 62.12% versus 47.83%.
Regarding the effects of climate change on personnel, 92.42% of surveys in Golfe confirmed their existence and 84.78 in Agoenyve, an average of 89.29% in the region according to graph 18.
By addressing the different types of effects on personnel in health facilities, the following percentages were obtained: exposure of workers (staff) to new working conditions or new dangers 63.64% in the Gulf district against 65 .22% in that of Agoé Nyvé; emergence of diseases (water, food, respiratory etc.) 80.3% against 69.57%; heat stroke 71.21% versus 69.57%; low productivity 59.09% versus 30.43%; mental health disturbance (physical discomfort=emotional state) 51.52% versus 36.96%; late for work 60.61% versus 36.96%; demotivation at work 54.55% against 26.09% and stress 65.15% against 30.43%.
4. Discussion
The results of this study show that in the region of Grand Lomé, 92.31% of the interviewees recognize the existence of effects on health workers, 84.62% on the environment and 84.62% on buildings. These results confirm that extreme events are only increasing over time and agree with [
8] who said that according to several climate models, we can expect until the end of the 21st century, depending on the scenarios and the effectiveness of climate policy measures, to global warming of up to 4.8°C. Likewise, as mentioned by [
9], this climate change characterized by rising temperatures, rising sea levels, distribution of precipitation and frequency as well as intensity of extreme weather events (heat waves , storms, floods, droughts, cyclones, etc.) constitutes a certain risk for human health. Our results agree and give us, according to the respondents in the Grand Lomé region, 53.22% for the rise in temperatures; 99.87% for abnormal rainfall trends; 96.77% for strong winds; 77.27% for sea level rise for the district concerned and 65.29% for drought. Addressing the impacts of climate change on personnel and the environment, the results clearly show the different effects. According to the WHO, climate change impacts the social and environmental determinants of health: clean air, drinking water, sufficient food, housing security [
2]. Our results are not outside of this assertion according to our respondents. Regarding the responses on environmental impacts, it reveals that: 58.57% for the degradation of distribution network systems (e.g.: electrical energy, water, gas, etc.; 61.60% for the air pollution; 48.45% for food pollution (food poisoning); 63.11% for water pollution (water-borne diseases) which corroborates with the WHO assertion that, diseases diarrheal diseases are not the rest [
10]. They are due to a microbe (protozoa, virus, bacteria) which is spread by the fecal-oral route, in particular by infection of fresh water or food contaminated by stools or by contact direct with infected stools; 53.69% for the unsanitary nature of the environment; 52.04% for the proliferation of insects and rodents (mosquitoes, flies, rats, etc.) and 54.98% for mosquito bites. According to the forecasts of [
2], between 2030 and 2050, we will realize that climate change will cause nearly 250,000 more deaths per year, linked to malnutrition, malaria, diarrhea and stress linked to heat. Also, we would risk having the cost linked to direct damage to health (costs in sectors determining health such as agriculture and water and sanitation excluded) of between 2 and 4 billion dollars (US
$) per year by 2030. Our following results are consistent with this assertion. Thus, they show us that in relation to the effects on workers, 64.43% for the exposure of workers (personnel) to new working conditions or new dangers; 74.93% for the emergence of diseases (water, food, respiratory, etc.); 47.60% for fatigue; 70.39% for heatstroke; 48.79% for lateness and 47.79% for stress.
In relation to infrastructure and buildings, our results support the assertion of [
2], according to which, areas without good health infrastructure, mostly in developing countries, will be least able to prepare and deal with the situation without assistance. Thus 71.44% of respondents say the impacts concern the reduction in efficiency, lifespan and safety of infrastructures and buildings; 50% for the subsidence of structures; 57.63% for roof removal; 57.04% for the invasion of buildings by water; 73.88% for cracking of protection slabs and 68.27% for humidity in buildings (mold).
Regarding the rise in sea level, our results are not far from confirming the results of the analysis of the CPDN Togo document, which confirms that the country has a maritime coast of 50 km subject to the erosion. And this impacts both surrounding homes and health facilities in these areas. 77.27% of our respondents attest that the sea level is rising as the years go by. In short, the analysis of our results agrees with the writings of several authors, namely: climate change has an impact on the health status of millions of people, due in particular to the intensification of malnutrition, the increase the number of deaths, illnesses and accidents due to extreme weather events [
1]. Added to this is the aggravation of the consequences of diarrheal diseases, the multiplication of cardiorespiratory diseases linked to high concentrations of tropospheric ozone in urban areas and changes in the geographical distribution of certain infectious diseases. According to IPCC projections, this the situation will be even more alarming because climate forecasts indicate, for example, that in the future, episodes of strong heat will be more frequent and intense. Along the same lines, it is recognized that the effects of this rapid and persistent climate change on health are likely to be very largely negative, especially for the poorest, weakest and most ill-prepared populations [
11]. This is the case for several regions in Africa where populations are exposed to climate change directly, under the effect of changing meteorological conditions, and indirectly, due to changes in water bodies, air, food quality and quantity, ecosystems, agriculture, livelihoods and infrastructure [
12]. Our results are also consistent with analyzes that both direct and indirect exposure jeopardize the improvement of human health and the well-being of populations. And again, these modifications are likely to promote, for example, a rapid development of vectors and parasites favorable to vector-borne diseases [
13]. Climate change is therefore a fundamental determinant of health [
14].
The observation prior to this study is that despite the efforts made at the international and national levels to mitigate the adverse effects of climate change on the environment and human health in developing countries, the associated risks and effects persist [
15].
Over the past 130 years, the temperature has increased by around 0.85°C worldwide. Over the last 25 years, the pace has accelerated and there is more than 0.18°C of warming per decade COP26, [
2]. Thus, after our research, in the region of Grand Lomé, it was observed in the period of 2017-2020, the occurrence of floods, high heat, overflow of sea level and increased violent winds [
16]. According to the 72nd session of the WHO for Africa, the temperatures are out of the norms and the floods destroy human lives by the spread of diarrheal diseases by the pollution of well water and the spread of infectious diseases. Which also confirms the increase in negative effects on buildings, personnel and the environment covered by our study. Also, the United Nations Climate Conference (COP26) mentions that extreme weather events are increasing in intensity and frequency with all the negative effects they cause [
2]. During the COP26 process in Glasgow, WMO Secretary General Petteri Taalas explained for his part that during the year 2020, climate indicators in Africa were characterized by a continuous increase in temperatures, an acceleration sea level rise, extreme weather and climate events, such as floods, landslides and droughts, and associated devastating impacts [
17]. In the same context, the observation is that heat waves and extreme maximum and minimum temperatures are expected to become more frequent. Likewise, the increase in the prevalence and/or incidence of diseases transmitted by mosquitoes due to increased precipitation is an illustration of climate variability [
20]. Humidity generates mold, a source of discomfort and this study confirms previous studies by the PNAS which stipulates that the relative humidity in the country will change from 51% in the north to reach 86% in the south, more precisely in the Maritime Region including was part of the Grand Lomé region after the administrative reforms (PNAS). This study made it possible to obtain the assigned results. The categories of rainy seasons are shortening in favor of dry months, which is in agreement with the conclusions of numerous studies in this area. The rainfall trend is reflected in a drop with a rise in temperatures in the Grand Lomé region. Climate change has a direct impact (effect) on certain types of diseases and primarily on vector-borne diseases, by transforming their conditions for survival and reproduction of vectors more favorable [
19]. Also, the increase in precipitation increases the dissemination of infectious agents and the temperature accelerates their growth, thus allowing water-borne or food-borne diseases that are very susceptible to climate change [
2]. In addition, harsher climatic conditions also lead to a deterioration in air quality and promote certain diseases such as respiratory infections or meningitis [
18]. By 2030, it is estimated that up to 118 million extremely poor people (those living on less than
$1.90 a day) will be exposed to drought, floods and extreme heat in Africa if adequate measures are not taken [
17].
Apart from all of the above, it is difficult to measure the effects of climate variability, since several indicators could be used, for example greenhouse gas emissions, atmospheric concentrations of different environmental factors as use of the energy, mode of food and water waste, transport etc. Meteorological data such as median temperatures, precipitation, sea level are generally used, while long-term indicators such as decadal temperature variations and rainfall are not considered.