DAILY CURRENT AFFAIRS IAS | UPSC Prelims and Mains Exam – 24th November 2023
Archives (PRELIMS & MAINS Focus) Malaria Syllabus Prelims –SCIENCE AND TECHNOLOGY Context: Recently, experts say that East Africa may experience a surge in El Nino-related malaria infections. Background:- Impending outbreaks of new infections can wipe away gains in malaria control, they say. About Malaria:- It is a life-threatening mosquito-borne blood disease. It is caused by Plasmodium parasites. It is predominantly found in the tropical and subtropical areas of Africa, South America as well and Asia. It is preventable as well as curable. Symptoms:- Symptoms usually begin ten to fifteen days after being bitten by an infected mosquito. Symptoms include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. Transmission:- The parasites spread through the bites of infected female Anopheles mosquitoes. In the human body, parasites initially multiply in liver cells and then attack the Red Blood Cells (RBCs). There are 5 parasite species that cause Malaria in humans and 2 of these species (Plasmodium falciparum and Plasmodium vivax) pose the greatest threat. Prevention:- Using mosquito nets when sleeping in places where malaria is present Using mosquito repellents (containing DEET, IR3535 or Icaridin) after dusk Using coils and vaporizers. Wearing protective clothing. Using window screens. Treatment:- Artemisinin-based combination therapy medicines like artemether-lumefantrine are usually the most effective medicines. Chloroquine is recommended for the treatment of infection with the vivax parasite only in places where it is still sensitive to this medicine. Primaquine should be added to the main treatment to prevent relapses of infection with the P. vivax and P. ovale parasites. Most medicines used are in pill form. Some people may need to go to a health centre or hospital for injectable medicines. (Malaria Vaccine) India’s status:- In India, malaria elimination efforts were initiated in These were intensified after the launch of the National Framework for Malaria Elimination (NFME) in 2016. It is an initiative under the Ministry of Health and Family Welfare. NFME is in line with WHO’s 2016-2030 Malaria Strategy. (World Malaria Report 2021) WHO’s 2016-2030 Malaria Strategy: guides the WHO Global Malaria Programme (GMP). Status on elimination: India continues to show a sustained decline in overall malaria but faces several challenges in its malaria elimination journey. MUST READ: New hope for malaria vaccine SOURCE: DOWN TO EARTH PREVIOUS YEAR QUESTIONS Q.1) Consider the following diseases (2014) Diphtheria Chickenpox Smallpox Which of the above diseases has/have been eradicated in India? 1 and 2 only 3 only 1, 2 and 3 None Q.2) Widespread resistance of the malarial parasites to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine? (2010) Malaria is caused by several species of Plasmodium Man does not develop immunity to malaria during natural infection Vaccines can be developed only against bacteria Man is only an intermediate host and not the definitive host Air Quality Index (AQI) Syllabus Prelims –GEOGRAPHY/ ENVIRONMENT AND ECOLOGY Context: Recently, the Air Quality Index in the overall Delhi region was recorded at 323. Background:- The air quality level was recorded in the “Very Poor” category in the National Capital. About Air Quality Index (AQI):- Air Quality Index (AQI) is a number used by government agencies to measure air pollution levels and communicate it to the population. (Air pollution) There are six AQI categories, namely Good, Satisfactory, Moderately polluted, Poor, Very Poor, and Severe. Each of these categories is decided based on ambient concentration values of air pollutants and their likely health impacts (known as health breakpoints). AQ sub-index and health breakpoints are evolved for eight pollutants (PM10, PM2.5, NO2, SO2, CO, O3, NH3, and Pb) for which short-term (up to 24-hours) National Ambient Air Quality Standards are prescribed. As the AQI increases, it means that a large percentage of the population will experience severe adverse health effects. The measurement of the AQI requires an air monitor and an air pollutant concentration over a specified averaging period. The results are grouped into ranges. Each range is assigned a descriptor, a colour code and a standardized public health advisory. The pollution sources in India and in most Asian countries are numerous and incompletely understood. In Delhi, for example, it comes mostly from light and heavy-duty vehicle traffic emissions, road dust, solid fuel combustion for heating and cooking, biomass, waste burning, thermal power plants, diesel generators, construction and small-scale local industries. ( Delhi and Air Pollution) Government Initiatives:- The National Air Quality Index Standard (NAQI): It was launched by The Minister for Environment, Forests & Climate Change, Shri Prakash Javadekar, on 17 September 2014. The initiative constitutes part of the Government’s mission to introduce the “culture of cleanliness”, as air pollution has been a huge concern in the country, especially in urban areas The National Air Monitoring Program (NAMP): it covers 240 cities in the country, has been operated by the Central Pollution Control Board (CPCB) and developed by the Indian Institute of Technology, Kanpur (IIT), providing data in the public domain, on a real-time basis. System of Air Quality and Weather Forecasting and Research (SAFAR) Portal. Graded Response Action Plan. Commission for Air Quality Management (CAQM) Reducing Vehicular Pollution: BS-VI Vehicles, Push for Electric Vehicles (EVs), Odd-Even Policy as an emergency measure. Subsidy to farmers for buying Turbo Happy Seeder (THS) Machine. MUST READ: Initiatives and Measures for Prevention of Air Pollution SOURCE: AIR PREVIOUS YEAR QUESTIONS Q.1) Consider the following: (2023) Aerosols Foam agents Fire retardants Lubricants In the making of how many of the above are hydrofluorocarbons used? Only one Only two Only three All four Q.2) In the context of WHO Air Quality Guidelines, consider the following statements: (2022) The 24-hour mean of PM2.5 should not exceed 15 ug/m3 and annual mean of PM2.5 should not exceed 5 ug/m3. In a year, the highest levels of ozone pollution occur during periods of inclement weather. PM10 can penetrate the lung barrier and enter the bloodstream. Excessive ozone in the air can trigger asthma. Which of the statements
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