1 Dambudziko reDengue: Dambudziko reHutano Hweveruzhinji Riri Kuwedzera Pasirose

Dengue chirwere chinotapuriranwa neumhutu chinokonzerwa nehutachiona hwedengue (DENV), icho chave chiri chirwere chinopararira nekukurumidza pasi rose, zvichikonzera njodzi huru kuhutano hwevanhu. Mumakumi maviri emakore apfuura, huwandu hwedengue pasi rose hwakawedzera zvakanyanya, nehuwandu hwezviitiko zvakataurwa zvakapetwa kaviri pagore kubvira muna 2021 [1]. Muna Zvita 2023, World Health Organization (WHO) yakazivisa dambudziko repasi rose redengue kusimbisa kuedza kwakabatana kwenyika dzese kurwisa. Kufungidzira kwezvirwere kubva kuWHO kunoratidza kuti vanhu vanosvika mabhiriyoni 3.9 pasi rose vari panjodzi yekutapukirwa nedengue, nehutachiona hunofungidzirwa kuti hunosvika mamiriyoni 390 hunoitika gore rega rega—pavanhu vanosvika mamiriyoni 96 varipo sevanhu vane chirwere ichi [1,2].

2 Zvinonyanya Kukosha paEpidemiology

Hunhu hwedengue hunoumbwa nekubatana kwezvinhu zvinokonzerwa nehutachiona, vector ecology, mhinduro dzemuviri wemunhu, uye mamiriro emagariro evanhu. Kunzwisisa kwakazara hunhu uhwu kwakakosha pakugadzira nzira dzinoshanda dzekudzivirira nekudzora pamwe nenzira dzakarurama dzekuongorora.

2.1 Mavekita Ekutumira uye Maitiro Ekutumira Mumaguta

Utachiona hweDengue hunonyanya kutapuriranwa neAedes aegypti naAedes albopictusUtunga. Pakati pemarudzi aya eutachiona, Aedes aegypti inozivikanwa seutachiona hwakakosha zvikuru, hunoratidzwa ne "kuchinjika kwevanhu" kwakanyanya uye kupararira kwakapararira munzvimbo dzinopisa uye dziri pasi pemvura. Kusiyana nedzimwe mhando dzeutachiona hwe arbovirus, Aedes aegypti ine hunhu hunotevera hwehutachiona:

-Kufarira kubereka munzvimbo dzinoenderana netsika dzevanhu (semuenzaniso, midziyo yekuchengetera mvura, matayi akaraswa)

-Kuwedzera kwakasimba kweropa revanhu senzvimbo inovaka muviri

-Maitiro ekudyisa masikati

Hunhu uhwu hunotsanangura dengue sechinhu chinowanzoitika"zvirwere zvinotapukira zvemumaguta,"nekubudirira kwekutapurirana kwacho kwakanyanya munzvimbo dzine vanhu vakawanda. Ongororo dzine chekuita neWHO dzakaratidza kuti munzvimbo dzine vanhu vakawanda mumaguta, kuwanda kwekubatana kwevanhu neumhutu kunogona kuwedzera huwandu hwekuberekana (R₀) hweDENV, nokudaro zvichikurumidzisa kupararira kwezvirwere [2].

2.2 Mafambiro Enyika Yose Uye Zvinhu Zvinoita Kuti Ive Nepfungwa Dzakanaka

Sekureva kwemishumo yeWHO, huwandu hwevanhu vane dengue pasi rose hwakawedzera zvakanyanya mumakore makumi maviri apfuura [1,3]. Kukwira uku kunonyanya kukonzerwa nezvinhu zvinotevera zvakabatana:

(1) Kuchinja Kwemamiriro Ekunze: Kukwira kwekushisa kwepasi rose hakungowedzeri nzvimbo dzakakodzera dzezvipenyu zvinotakura umhutu chete asiwo kunopfupisa nguva yekuzvara kweDENV kunze kwemhutu, nokudaro zvichiwedzera kushanda zvakanaka kwekutapurirana. Kusiyana kwehuwandu hweumhutu hunokonzerwa nemamiriro ekunze kwakasimbiswa neWHO sechiratidzo chakavimbika chekuchinja kwemamiriro ekunze kwedengue.

(2) Kukura kwemaguta: Kuwedzera kwemaguta nekukurumidza uye kusina kurongwa kwakagadzira nzvimbo dzakawanda dzekuberekera mhuka dzinotakura umhutu, ukuwo kuwanda kwevanhu kwakasimbisa kuenderera mberi kwehutachiona hweDENV.

(3) Kufamba Kwevanhu Pasirose: Kufamba kwenyika dzakasiyana-siyana nekutengeserana kwakaita kuti DENV ipfuure nekukurumidza, zvichikurudzira kuchinja kubva kuzvirwere zvinopinzwa munyika kuenda kuzvirwere zvemuno. Data rekuongorora reWHO rinoratidza kuti pakati pa2010 na2021, United States yakashuma nyaya dzedengue dzinosvika 7,528, pakati padzo 3,135 dzaida kugara muchipatara uye 19 dzakakonzera kufa.

(4) Kuwedzera Kwekupararira Kwezvirwere: Pasi rose, huwandu hweAedes aegypti neAedes albopictus huri kuramba huchiwedzera, uye umhutu hweAedes huri kuramba huchiwedzera munzvimbo dzakasiyana dzeEurope. Nekuda kweizvozvo, dengue yakashanduka kubva pakuva denda redunhu kusvika pakuva njodzi yehutano hweveruzhinji pasi rose.

2.3 Nzira dzeMulti-Serotype Co-circulation uye Reinfection

Utachiona hweDengue hune marudzi mana akasiyana-siyana (DENV-1 kusvika DENV-4). Kutapukirwa neserotype imwe chete kunopa dziviriro yenguva refu kubva ku serotype iyoyo asi kudzivirira kwenguva pfupi uye zvishoma kubva kune mamwe marudzi matatu. Vanhu vazhinji vanogona kubatwa neDENV, neboka revanhu vane hutachiona chete vari kurwara [2].

Munzvimbo dzakapararira, ma serotype akawanda eDENV anowanzo tenderera pamwe chete, zvichikonzera mukana wekuti vanhu vabatwe nezvirwere zvedengue zvakawanda muhupenyu hwavo hwese. Zvidzidzo zveWHO zvinoratidza kuti multi-serotype co-circulation ndiyo inonyanya kukonzera dengue [1].

2.4 Kuwedzerwa kwehutachiona hwechipiri uye kuvandudzwa kwekudzivirira muviri kunoenderana nemuviri

Chiitiko chakakosha uye chakasiyana mukuongorora dengue ndechekuwedzera kunoenderana neantibody (ADE). Munguva yehutachiona hwechipiri neDENV serotype yakasiyana, ma antibodies asingadzivisi utachiona anogadzirwa panguva yehutachiona hwekutanga anobatsira kupinda kwehutachiona muma monocytes nema macrophages, nokudaro zvichiwedzera kukura kwehutachiona. Maitiro aya anozivikanwa zvakanyanya neWHO sechinhu chikuru chinokonzera dengue yakanyanya, kusanganisira dengue hemorrhagic fever uye dengue shock syndrome [1].

Ruzivo rweWHO rwezvirwere zvinoratidza nguva dzose kuti vanhu vane hutachiona hwechipiri hwedengue vane mukana wakakura wekuwana chirwere chakakomba kana tichienzanisa nevaya vane hutachiona hwekutanga—hunhu hunokosha zvikuru pakuongorora chirwere uye kurapwa kwekiriniki. Zvakakosha kucherechedza kuti kunyange zvazvo njodzi yechirwere chakakomba ichikwira panguva yehutachiona hwechipiri, hutachiona hwechero rudzi rweDENV hunogona kuenderera mberi kuita dengue yakakomba [1].

2.5 Zviratidzo zveKliniki Zvisina Kunanga uye Njodzi yeKuongororwa Zvisina Kunanga

Zviratidzo zvechirwere chedengue hazvisi pachena, kunyanya pakutanga kwechirwere, zvinowanzoenderana nezvimwe zvirwere zvinotapukira zvinokonzerwa neumhutu (semuenzaniso, chikungunya neZika viruses) pamwe nezvimwe zvirwere zvekufema. WHO inofungidzira kuti 40-80% yezvirwere zveDENV hazvina zviratidzo [3].

Zviratidzo zvekiriniki zvakajairika zvinosanganisira:

-Fivha yakasimba (inogara kwemazuva 2-7, iyo inogona kunge iri miviri miviri)

-Musoro wakanyanya uye kurwadziwa kwemashure memaziso (kurwadziwa kumashure kwemaziso)

-Kurwadziwa kwetsandanyama nemajoini (kunowanzonzi "breakbone fever")

-Mapundu emumapundu kana emumapundu emumapundu

- Zviratidzo zvishoma zvekubuda ropa (semuenzaniso, ecchymosis, epistaxis, kubuda ropa mumazino)

Zviratidzo zvedengue zvinowanzokamurwa kuita zvikamu zvitatu zvakasiyana: chikamu chefivha, chikamu chakakosha, uye chikamu chekupora. Vanenge vasingasviki 5% yevarwere vane zviratidzo vanopedzisira vava nedengue yakakomba. Nekuda kwekushaikwa kwezviratidzo zvekiriniki, kuongororwa kwakavakirwa chete pazviratidzo zvekiriniki kwakaoma, izvo zvinowedzera njodzi yekuongorora zvisizvo uye kuongororwa kushoma. WHO inosimbisa zvakajeka kuti kuongororwa kwekiriniki chete hakuna kukwana kuti ive nechokwadi chekuti kwakarurama, zvichiita kuti kusimbiswa kwerabhoritari kuve kwakakosha [1].

 Pfungwa nhatu dzinokosha kubva kuWHO "Kuongororwa kweDengue muLabhoritari: Nhungamiro Yenguva Pfupi, Kubvumbi 2025"

Muna Kubvumbi 2025, World Health Organisation yakaburitsa gwara renguva pfupi pamusoro pekuongororwa kweDENV murabhoritari, ichipa gwara rehunyanzvi rekuongorora dengue pasi rose. Gwaro iri rinogadzira humbowo hwazvino pamusoro pekuongororwa kwedengue murabhoritari maererano nedambudziko repasi rose redengue uye rinopa mazano anoshanda akagadzirirwa nzvimbo dzine huwandu hwakasiyana hwezviwanikwa.

3.1 Nheyo Dzinokosha dzeNzira Yekuyedza

Nhungamiro iyi inosimbisa kuti kuongororwa kwechirwere chedengue kunofanira kushandisa nzira yekuyedza ine zviratidzo zvakawanda zvichienderana nedanho rechirwere [1]. Zvichienderana nekushaikwa kwehurongwa hwekuongorora hunoshandiswa nevanhu vose, nzira dzekuyedza dzinofanira kugadziriswa kuti dzienderane nemamiriro ezvirwere munharaunda, tichifunga nezvezvinhu zvinotevera zvikuru [1]:

-Danho rekutapukirwa: Huwandu hwemazuva ekutanga kwechirwere mushure mechiratidzo ndiyo nzira yakakodzera yekuyedza

-Rudzi rwemuenzaniso: Kukodzera kweropa rose, plasma, kana serum kuti zvionekwe neDENV

-Epidemiology yedunhu: Marudzi eDENV anotenderera munharaunda uye kutenderera pamwe chete kwemamwe mavhairasi e arbovirus

-Njodzi yekutapukirwa nehutachiona hwepamwe chete: Munzvimbo dzine kutenderera kweropa re arbovirus, kuongororwa kwe multiplex kunofanirwa kutariswa kuti kuonekwe pakati pezvirwere zvakasiyana.

3.2 Nzira Yekuedza Yakavakirwa Padanho Rekutanga

Zvinoenderana nenhungamiro yeWHO, kuongororwa kwedengue murabhoritari kunofanirwa kuitwa zvichienderana nenguva yakaonekwa chirwere ichi [1,2]:

(1) Kuongororwa kweAcute Phase (≤mazuva manomwe mushure mekutanga)

-Kuedzwa kweNucleic Acid (Kuedzwa kweMolecular): Reverse transcription-polymerase chain reaction (RT-PCR) nedzimwe nzira dzemamorekuru dzinoona DENV RNA ine kunzwisisika kwakanyanya.

-Kuongororwa kweAntigen: Kuonekwa kweNS1 antigen, iyo inoonekwa mukati memazuva 1-3 mushure mekutanga.

Munguva yechirwere che acute phase, huwandu hwe viremia hwakakwira zvakanyanya, uye kuyedzwa kwe nucleic acid ne antigen kunowana kunzwisisika kwakanyanya.

(2) Kuongororwa kweChikamu Chekupora (≥mazuva 4 mushure mekutanga)

-Kuongororwa kweSerological: Ma antibodies eIgM anowanzoonekwa pazuva rechina mushure mekutanga kwechirwere.

-Muzviitiko zvakawanda, ma antibodies eIgM anoramba aripo kwemazuva 14-20, uye mune zvimwe zviitiko, kuramba aripo kunogona kusvika mazuva makumi mapfumbamwe.

-Kuongororwa kweIgG hakuna kukosha kukuru pakuongororwa kwechirwere chedengue nekuda kwezvinogona kuitika zvema antibodies anokonzerwa nehutachiona hweflavivirus kana kubaiwa nhomba.

(3) Algorithm Inofungidzirwa Yekuongorora Nyaya

Nhungamiro iyi inosanganisira nzira yekuongorora vanhu vanofungidzirwa kuti vane dengue, ichikurudzira nzira dzakakodzera dzekuyedza zvichibva pamazuva ekutanga kwezviratidzo: Kuyedza NS1 antigen uye kuyedza nucleic acid ndiyo nzira huru muchikamu chekutanga, nepo kuyedza serological iriyo nzira huru muchikamu chinotevera.

3.3 Kuongororwa uye Kusarudzwa kweMaitiro eNzira yeKuyedza

Sekureva kweWHO, ongororo yakarongeka yekushanda uye mamiriro akakodzera ekuongororwa kwedengue akasiyana ndeiyi inotevera:

Zvinokurudzirwa Zvina zveMacro & Micro-Test Dengue Detection Product neScenario

Kuti vatsigire kudzivirira nekudzora dengue, Macro & Micro-Test inopa gwaro rekuongorora chirwere rinosanganisira kuongororwa nekukurumidza, kusimbiswa kwemamorekuru, uye kutariswa kwemajini, zvichizadzisa zvinodiwa mumatanho akasiyana ekugadzirisa denda.

4.1 Chiitiko 1: Kukurumidza Kuongorora uye Kutarisa Kwakanangana

Inoshanda kumakiriniki efivha, nzvimbo dzehutano hwekutanga, kuongororwa kwenharaunda yedenda, uye kuvharirwa kwevanhu vane chirwere cheport/border.

-Dengue Virus NS1 Antigen Rapid Test: Inoona hutachiona hwepakutanga (mazuva 1-3 mushure mekutanga) uye mhinduro yemaminitsi gumi nemashanu yekuongorora nekukurumidza.

-Kuongororwa kweAntibody yeDengue Virus IgM/IgG: Kusiyanisa hutachiona hwekutanga/hwechipiri kuti uone njodzi huru yechirwere.

-Dengue Virus NS1 Antigen + IgM/IgG Combined Rapid Test: Panguva imwe chete inoona antigen nema antibodies kuti iongororwe zvizere.

-Chikungunya Virus IgM/IgG Antibody Test: Inobvumira kuongororwa kwakasiyana-siyana nedengue kuti ione hutachiona nemazvo.

4.2 Chiitiko 2: Kuongorora Nekungwarira uye Kupindura Panjodzi

-Dengue Virus I/II/III/IV Nucleic Acid Detection Kit: Inoona uye inosiyanisa ma serotype mana (muganho wekuona makopi 500/mL) ekutsvaga chirwere ichi.

-Kit yePCR yeDengue Virus yakapfava: Inotakurwa nekupisa kwemukamuri, yakakodzera nzvimbo dzisina zviwanikwa zvakawanda uye kubuda kamwe kamwe kwechirwere.

-Dengue/Zika/Chikungunya Multiplex Real-Time PCR Kit: Inoona panguva imwe chete ma arbovirus matatu kuti ionekwe zvakanaka muzvirwere zvakaoma.

Zvese zvataurwa pamusoro apa zvinoenderana neAIO 800 Fully Automated Sample-to-Answer System, zvichideredza mashandiro emaoko uye kusvibiswa kwemakemikari, uye zvichivandudza kushanda zvakanaka uye kuchengetedzwa kwezvinhu zvipenyu.

4.3 Chiitiko 3: Kuongororwa kweGenomic uye Kuongorora Dzinza reVarwere

Inoshanda kumarabhoritari ekuongorora emunyika, masangano ekutsvagisa hutano hweveruzhinji, zvichienderana nemaonero eWHO paNGS.

Mhinduro dzekuongorora majini dzeMacro & Micro-Test dzinotsigira kutevedzana kwemajini ese ekutevera hutachiona, kujekesa cheni yehutachiona, kutarisa kwakasiyana-siyana, uye kugadzirisa nzira dzekudzivirira. Dzinotsigira mashandiro ebasa nemaoko/otomatiki, dzichivandudza kubuda kweropa uye kuberekana, zvichiita kuti marabhoritari akwidziridzwe kubva pakuongorora kwakajairika kuenda pakuongorora kwepamusoro, zvichienderana nekusimbiswa kweWHO pakusimbisa kutarisa kwekushanduka kwehutachiona.

4.4 Kukosha kweMhinduro Dzakabatanidzwa

Macro & Micro-Test inopa mhinduro dzakakwana dzekuongorora arbovirus, ichitsigira danho rega rega rekutonga denda: maturusi ekuongorora nekukurumidza ekugadzirisa hutano hwepamberi, kusimbiswa kwemamorekuru kuti aonekwe nemazvo, uye kugona kuongorora genome rese kwekutarisa epidemiological. Nekuyedza kwepamusoro-soro, mashandiro anochinjika, uye mapuratifomu akagadzirirwa otomatiki, mhinduro idzi dzinopa simba marabhoritari nehurongwa hwehutano hweveruzhinji kusimbisa kugadzirira uye kupindura kunjodzi dziri kubuda dzearbovirus pasi rese.

Mareferensi

[1] Sangano reHutano rePasirose. Kuongororwa kweDengue muLabhoritari: Nhungamiro yeChinguvana, Kubvumbi 2025. Geneva: Sangano reHutano rePasirose; 2025.

[2] WHO Global Arbovirus Initiative Technical Advisory Group. Kusimbisa Kugadzirira Kwepasi Pose uye Kupindura Kutyisidzira kweZvirwere zveArbovirus: Kudanwa Kwekuita. Lancet Infect Dis. 2026;26(1):15-17.

[3] Utachiona hweLancet. Kukunda Dambudziko reKuongororwa kweDengue. Utachiona hweLancet. 2025;6(7):101190.