{"id":42290,"date":"2025-11-08T07:51:39","date_gmt":"2025-11-08T02:21:39","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=42290"},"modified":"2025-11-10T11:21:43","modified_gmt":"2025-11-10T05:51:43","slug":"chandipura-virus-genome-mapping","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/chandipura-virus-genome-mapping\/","title":{"rendered":"Chandipura Virus Genome Mapping: Key Findings and Impact on Healthcare"},"content":{"rendered":"<h2><strong>What\u2019s in today\u2019s article?<\/strong><\/h2>\n<ul>\n<li>Why in News?<\/li>\n<li>Genome mapping<\/li>\n<li>Chandipura<\/li>\n<li>Key Findings from GBRC&#8217;s Genome Mapping of CHPV<\/li>\n<\/ul>\n<h2><strong>Why in News?<\/strong><\/h2>\n<p>The Gujarat Biotechnology Research Centre (GBRC) in Gandhinagar has successfully published the first fully mapped genome of the Chandipura Vesiculovirus (CHPV).<\/p>\n<p>This virus is responsible for causing encephalitis or brain swelling, which accounted for a significant portion of cases during the outbreak in Gujarat in July-August.<\/p>\n<h2><strong>Genome mapping<\/strong><\/h2>\n<ul>\n<li><strong>About<\/strong>\n<ul>\n<li>Genome mapping refers to the process of identifying the locations of genes and important sequences on a genome.<\/li>\n<li>Genome mapping provides important clues on where a virus comes from, how it is changing, and whether it has any mutations that are likely to make it more transmissible or deadly.<\/li>\n<li>Genome maps are of two types:\n<ul>\n<li><strong>genetic maps<\/strong>, which show the relative positions of genes based on recombination frequency, and<\/li>\n<li><strong>physical maps<\/strong>, which show the absolute positions of genes based on DNA base pairs.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Significance<\/strong>\n<ul>\n<li><strong>Understanding Genetic Disorders<\/strong>: Genome mapping helps identify genes associated with genetic diseases, facilitating early diagnosis, targeted treatment, and genetic counseling.<\/li>\n<li><strong>Personalized Medicine<\/strong>: Mapping can lead to customized treatment plans based on an individual&#8217;s genetic makeup, improving the effectiveness of therapies.<\/li>\n<li><strong>Agriculture<\/strong>: In crops and livestock, genome mapping allows the identification of desirable traits, aiding in breeding programs for higher yield, disease resistance, and quality.<\/li>\n<li><strong>Vaccine and Drug Development<\/strong>: Understanding the genomic structure of pathogens like viruses helps develop effective vaccines and drugs, as seen in the fight against infectious diseases like <a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/covid-19\/\" target=\"_blank\">COVID-19<\/a> and CHPV.\n<ul>\n<li><strong>Evolutionary Studies<\/strong>: Genome maps provide insights into evolutionary relationships between species by comparing genetic sequences across organisms.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Challenges<\/strong>\n<ul>\n<li><strong>Complexity of Genomes<\/strong>: Larger genomes, such as those in plants and animals, are highly complex and contain repetitive sequences, making accurate mapping difficult.<\/li>\n<li><strong>Ethical Concerns<\/strong>: Genome mapping can raise privacy and ethical issues, especially regarding how genetic information is used and who has access to it.<\/li>\n<li><strong>Cost and Resources<\/strong>: Although costs have reduced, genome mapping, particularly for large-scale projects, still requires significant financial investment and technological resources.<\/li>\n<li><strong>Data Interpretation<\/strong>: Even after mapping, interpreting the significance of various genes and sequences remains a challenge due to gaps in our understanding of their functions.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>Chandipura<\/strong><\/h2>\n<ul>\n<li><strong>About<\/strong>\n<ul>\n<li>Chandipura is a viral infection that can lead to outbreaks of Acute Encephalitis Syndrome (AES) or brain swelling.<\/li>\n<li>It is known to cause fever, headache, and encephalitis leading to convulsions, coma, and death, usually within a few days of the symptoms showing up.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Family and Vectors<\/strong>\n<ul>\n<li>Chandipura virus (CHPV) belongs to the <i><strong>Rhabdoviridae family<\/strong><\/i>, which includes viruses like the lyssavirus (rabies).<\/li>\n<li>Several sandfly species, such as <i><strong>Phlebotomine sandflies<\/strong><\/i> and <i><strong>Phlebotomus papatasi<\/strong><\/i>, along with Aedes aegypti mosquitoes (also responsible for dengue), act as vectors.<\/li>\n<li>The virus resides in the salivary glands of these insects and is transmitted to humans or other vertebrates through bites.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Transmission and Progression of Infection<\/strong>\n<ul>\n<li>Once transmitted, CHPV can spread to the central nervous system, leading to encephalitis (brain inflammation).<\/li>\n<li>Symptoms begin with flu-like signs such as fever, body aches, and headaches, and may escalate to altered mental status, seizures, and encephalitis.<\/li>\n<li>Other symptoms may include respiratory distress, bleeding tendencies, or anemia.<\/li>\n<li>The infection often progresses rapidly, leading to death within 24-48 hours of hospitalization.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Most Affected Population<\/strong>\n<ul>\n<li>The <a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/virus\/\" target=\"_blank\">virus<\/a> predominantly affects children under 15 years of age.<\/li>\n<li>The infection tends to be seasonal, with outbreaks often reported during periods when the sandfly population increases, particularly in monsoon seasons.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Historical Outbreaks and Endemic Regions<\/strong>\n<ul>\n<li>CHPV was first identified in 1965 during a dengue\/chikungunya investigation in Maharashtra.<\/li>\n<li>Significant outbreaks occurred in 2003-2004 in Maharashtra, northern Gujarat, and Andhra Pradesh, resulting in over 300 deaths among children. T<\/li>\n<\/ul>\n<\/li>\n<li>he case fatality rate (CFR) during the 2004 Gujarat outbreak reached 78%, while Andhra Pradesh reported a CFR of 55% in 2003.\n<ul>\n<li>The infection remains endemic in central India, where the vector population is more concentrated.<\/li>\n<li>Outbreaks are most commonly reported in rural, tribal, and peripheral areas.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>Key Findings from GBRC&#8217;s Genome Mapping of CHPV<\/strong><\/h2>\n<ul>\n<li><strong>No Major Change in Genetic Makeup<\/strong>\n<ul>\n<li>The CHPV virus from the recent Gujarat outbreak is highly similar to the 2012 strain, with only a single amino acid mutation in the glycoprotein-B gene.<\/li>\n<\/ul>\n<\/li>\n<li>This gene is crucial for the virus\u2019s ability to bind to human cell receptors and trigger an immune response.\n<ul>\n<li>Unlike COVID-19, the virus has not needed to change much, possibly due to low population-wide antibody development and the absence of a vaccine.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Low Viral Load but Severe Impact<\/strong>\n<ul>\n<li>Despite the high Cycle Threshold (Ct) value in RT-PCR tests, indicating a low viral load, the virus still caused severe symptoms.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Indigenous Virus, Not Imported<\/strong>\n<ul>\n<li>Genome sequencing revealed that the current virus strain is closely related to those from previous Indian outbreaks in 2003-04 and 2007.<\/li>\n<li>The virus was not imported from abroad and is distinct from strains found in Europe and Africa, confirming that it is circulating within India.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>Q.1. What is genome mapping, and why is it significant for healthcare?<\/strong><\/h3>\n<p>Genome mapping helps locate genes on a genome, offering insights into virus mutations and aiding vaccine development, as seen in the Chandipura virus case.<\/p>\n<h3><strong>Q.2. What were the key findings from the Chandipura virus genome mapping?<\/strong><\/h3>\n<p>The Chandipura virus from the Gujarat outbreak closely resembled earlier strains, with minimal genetic changes, highlighting its low mutation rate.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-health\/genome-mapping-chandipura-virus-9550092\/\" target=\"_blank\" rel=\"nofollow noopener\">Genome mapping of Chandipura virus: what researchers found<\/a> | <a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-health\/chandipura-virus-infection-chpv-9457349\/\" target=\"_blank\" rel=\"nofollow noopener\">Indian Express<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn about the first fully mapped genome of the Chandipura Vesiculovirus, its impact on encephalitis outbreaks, and the significance of genome mapping in vaccine and drug development.<\/p>\n","protected":false},"author":5,"featured_media":42291,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":{"0":"post-42290","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-mains-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/42290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=42290"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/42290\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/42291"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=42290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=42290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=42290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}