Malaria has caused so many deaths in Nigeria and around the world. To be on a safer side, it is best to know what malaria is, the symptoms of malaria, its causes, and its cure.
Facts About Malaria In Nigeria
Malaria is transmitted all over Nigeria; 76 % of the population lives in high transmission areas while 24 % of the population lives in low transmission areas. The transmission season can last all year round in the south and is about 3 months or less in the northern part of the country. The primary vector across most of the country is Anopheles (An.) gambiae s.s.
According to the 2020 World Malaria Report, Nigeria had the highest number of global malaria cases (27 % of global malaria cases) in 2019 and accounted for the highest number of deaths (23 % of global malaria deaths).
Case numbers increased 3.5% between 2016 and 2019, from 293 to 303 per 1000 of the population at risk. Deaths fell 16%, however, from 0.57 to 0.47 per 1000 of the population at risk during that same period.
Microscopy data from the 2018 Nigeria Demographic and Health Survey (NDHS) show that the prevalence of malaria parasitaemia in children under five years of age is 23 percent (a decrease from 27% in 2015 and 42% in 2010), although there are significant regional, rural-urban, and socioeconomic differences:
- Prevalence ranges from 16% in the South and South East Zones to 34% in the North West Zone.
- In rural populations, prevalence is 2.4 times that in urban populations (31% vs. 13%)
- Compared to the highest socioeconomic group, prevalence among children in the lowest socioeconomic group is seven times higher (38% vs. 6%).
The 2018 NDHS also indicated that 43% of the population slept under an insecticide-treated net (ITN) the previous night.
The 2014–2020 National Malaria Strategic Plan (NMSP) expired in December 2020. However, the 2019 Malaria Program Review indicated that there will be no significant changes in the strategic direction of the malaria elimination program in the new strategic plan.
The Government of Nigeria has secured credits from three multilateral banks (the World Bank, African Development Bank, and Islamic Development Bank) totalling $364 million to fund health sector interventions in 13 states of the Federation for five years (2020–2024) for malaria.
What Is Malaria?
Malaria is a life threatening disease that is transmitted through the bite of an infected Anopheles mosquito. An infected mosquito carries a parasite called Plasmodium. When bitten by an infected mosquito, it releases the plasmodium parasite into your bloodstream.
Immediately the plasmodium parasites are inside your body, they travel to the liver, where they mature. Some days later, the mature parasites enter the bloodstream and begin to infect the red blood cells.
Within 48 to 72 hours, the parasites inside the red blood cells multiply, which causes the infected cells to burst open itself.
The plasmodium parasites continue to infect red blood cells, leading in symptoms that occur in cycles that last two to three days at a time.
Malaria is mostly found in tropical and subtropical climates because the climate is favourable for the parasites to live. In most parts of sub-Saharan Africa, entire populations are infected more or less constantly with malaria. Malaria is also common in Central America, the northern half of South America, and South and Southeast Asia. The disease also occurs in countries bordering on the Mediterranean, the Middle East, and in East Asia.
In Europe, North America, and the developed countries of East Asia, malaria is still encountered in travellers arriving or returning from affected tropical zones. Statistics were taken by The World Health Organization (WHO) and they found out that, in 2016, there were an estimated 216 million malaria cases in 91 countries. f
Falciparum causes a more severe form of the disease and those who contract this form of malaria have a higher risk of death. An infected mother can also pass the disease to her baby at birth which is known as congenital malaria.
Malaria is transmitted by blood, so it can also be transmitted through an organ transplant, a transfusion or use of shared needles or syringes.
In the United States, the Centers for Disease Control and Prevention (CDC) report 1,700 cases of malaria annually. Malaria is not only known in Nigeria, it is also known in about 91 other counties, but most cases of malaria develop in people who travel to countries where malaria is very common.
Malaria infection in humans is mostly characterized by periodic attacks of fever and chills, anemia, splenomegaly (enlargement of the spleen), and often fatal complications.
In the early 21st century the occurance of malaria, and the number of deaths caused by the disease, seemed to be reducing. For example, the World Health Organization (WHO) estimated that in 2000 there were 233 million cases of malaria worldwide, which resulted in roughly 985,000 deaths, mostly of young children in Africa. In 2010 there were an estimated 216 million cases and 655,000 deaths. By 2018, cases had increased to 228 million worldwide, though deaths had continued to decline, numbering about 405,000 that year.
China became the 40th country to be officially declared malaria free in 2021 by WHO which is the most populous country worldwide to have been granted the designation. China had not experienced any indigenous cases for three years in a row, the qualification required to achieve WHO’s malaria-free certification.
Causes Of Malaria
Malaria in humans is caused by five related protozoan (single-celled) parasites: Plasmodium falciparum, P. vivax, P. ovale, P. malariae, and P. knowlesi. The most common worldwide is P. vivax. The deadliest is P. falciparum. In 2008 P. knowlesi, which was thought to infect primarily Old World monkeys and to occur only rarely in humans, was identified as a major cause of malaria in humans in Southeast Asia, accounting for as many as 70 percent of cases in some areas. P. knowlesi was found to be easily confused with P. malariae during microscopic examination, resulting in many cases being attributed to P. malariae when in fact they may have been caused by P. knowlesi.
Symptoms Of Malaria
Symptoms of malaria fully develops within 10 days to 4 weeks after the infection. In some cases, symptoms may not develop for several months. Some malarial parasites can enter the body but will be dormant for long periods of time.Common symptoms of malaria are:
- Shaking chills that can range from moderate to severe
- High fever
- Profuse sweating
- Abdominal pain
- sleeplessness or deep unresponsiveness and inactivity
- Muscle pain
- Shortness of breath
- Loss of appetite.
- Bloody stools
How Is Malaria Diagnosed?
During your appointment with your doctor, he/she will be able to diagnose malaria. Your doctor will review your health history, a physical exam will also be performed.
Your doctor will be able to determine if you have an enlarged spleen or liver. If you have symptoms of malaria, your doctor may order additional blood tests to confirm your diagnosis. These tests will show:
– If you have malaria.
– The type of malaria you have.
– If your infection is caused by a parasite that’s resistant to certain type of drugs.
– If the disease has caused anemia.
– If the disease has affected your vital organs.
Life Threatening Complications Of Malaria.
Malaria can cause some life-threatening complications. The following may occur if malaria gets complicated:
- Swelling of the blood vessels of the brain, or cerebral malaria.
- Accumulation of fluid in the lungs that causes breathing problems, or pulmonary edema.
- Organ failure of the kidneys, liver, or spleen.
- Anemia due to the destruction of red blood cells.
- Low blood sugar.
How Is Malaria Cured Or Treated?
Malaria can be life-threatening if you are infected with the parasite P. falciparum. Treatment for the disease is typically provided in a hospital. Your doctor will prescribe medications based on the type of parasite that you have.
In some cases, the medication prescribed may not clear the infection because of the parasite’s resistance to drugs. If this happens, your doctor may need to use more than one medication or change medications altogether to treat your condition.
Additionally, certain types of malaria parasites, such as P. vivax and P. ovale, have liver stages where the parasite can live in your body for an extended period of time and reactivate at a later date causing a relapse of the infection.
If you’re found to have one of these types of malaria parasites, you’ll be given a second medication to prevent a relapse in the future.
There’s no vaccine available to prevent malaria. Talk to your doctor if you live in such an area that is being infested by mosquito. You may be prescribed medications to prevent the disease. There are good and effective medications for the treatment of malaria, but the medication is not 100% effective.
- Sleeping under a mosquito net may help prevent being bitten by an infected mosquito.
- Always clean the gutter in your surroundings.
- Covering your skin by wearing long clothes like a legging to cover any exposed skin help to protect you from mosquito bite.
- Plant mosquito repellent flowers around your compound.
- Making use of bug sprays containing DEET may also help prevent infection.
- Avoid outdoor exposure between dusk and dawn because they mostly come out to feed at night.
- Stay in well-screened or air-conditioned rooms
Malaria is a life-threatening disease caused by a parasite that’s carried by certain mosquito in warm climates.
The parasites that cause malaria attack your red blood cells. The symptoms of malaria are high fever, shaking chills, and other symptoms that may develop into life-threatening complications.
Malaria is a major threat to human health worldwide and a leading cause of illness and death in many developing countries, especially in young children. Pregnant women are also more vulnerable to the disease.
Most cases of malaria occur in sub-Saharan Africa and South Asia, but the disease also affects several other areas of the world, including Nigeria, Latin America, Southeast Asia, and Oceania.