scholarly journals IDENTIFIKASI BAKTERI Salmonella sp. PADA PENDERITA DEMAM TIFOID ANAK USIA 5-14 TAHUN DENGAN METODE WIDAL TEST DI RUMAH SAKIT ADVENT MEDAN TAHUN 2018

2021 ◽  
Vol 6 (1) ◽  
pp. 6-12
Author(s):  
Mulya Sundari ◽  
Debie Rizqoh ◽  
Grace Junita Bate'e
Keyword(s):  
Salmonella Typhi ◽  
Widal Test ◽  
Paratyphi B

Demam tifoid merupakan suatu penyakit sistemik akut yang disebabkan oleh Salmonella typhi, Salmonella paratyphi A, Salmonella paratyphi B dan Salmonella paratyphi C. Penularan demam tifoid terjadi secara fekal-oral melalui makanan dan minuman yang terkontaminasi yang masuk kedalam tubuh.Pada anak-anak demam tifoid dapat terjadi akibat  kurang memperhatikan kebersihan diri dan kebiasaan jajan yang sembarangan sehingga dapat menyebabkan tertular penyakit demam tifoid.Telah dilakukan penelitian terhadap 10 serum penderita demam tifoid anak usia 5-14 tahun di Rumah Sakit Advent Medan, dengan identifikasi bakteri Salmonellamelalui Uji Widal.Hasil yang telah di peroleh yaitu 1 orang pasien positif terhadap Salmonella typhii;1 orang pasien positif terhadap Salmonella typhii dan Salmonella paratyphii B; 3 orang pasien positif terhadap Salmonella typhii, Salmonella paratyphii B dan Salmonella paratyphii C; 2 orang pasien positif terhadap  Salmonella typhii, Salmonella paratyphii A dan Salmonella paratyphii C; 1 orang pasien positif terhadap Salmonella paratyphii A, Salmonella paratyphii B dan Salmonella paratyphii C dan2 orang  pasien yang positif terhadap  Salmonella typhii, Salmonella paratyphii A, Salmonella paratyphii B dan Salmonella paratyphii C. Dalam penelitian ini, sebagian besar pasien positif terhadap lebih dari 1 antigen Salmonella, hal ini dapat terjadi karena adanya reaksi silang sebelumnya dengan antigen antara spesies Salmonella yang sama yang memiliki antigen O faktor 12 atau pernah terinfeksi dahulu dengan salah satu spesies Salmonella.

scholarly journals Classification of Salmonella enterica of the (Para-)Typhoid Fever Group by Fourier-Transform Infrared (FTIR) Spectroscopy

2021 ◽  
Vol 9 (4) ◽  
pp. 853
Author(s):  
Miriam Cordovana ◽  
Norman Mauder ◽  
Markus Kostrzewa ◽  
Andreas Wille ◽  
Sandra Rojak ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Salmonella Typhi ◽  
Food Samples ◽  
Bacterial Typing ◽  
Suitable Alternative ◽  
Promising Tool ◽  
Resource Limited ◽  
Paratyphi B ◽  
Paratyphoid Fever

Typhoidal and para-typhoidal Salmonella are major causes of bacteraemia in resource-limited countries. Diagnostic alternatives to laborious and resource-demanding serotyping are essential. Fourier transform infrared spectroscopy (FTIRS) is a rapidly developing and simple bacterial typing technology. In this study, we assessed the discriminatory power of the FTIRS-based IR Biotyper (Bruker Daltonik GmbH, Bremen, Germany), for the rapid and reliable identification of biochemically confirmed typhoid and paratyphoid fever-associated Salmonella isolates. In total, 359 isolates, comprising 30 S. Typhi, 23 S. Paratyphi A, 23 S. Paratyphi B, and 7 S. Paratyphi C, respectively and other phylogenetically closely related Salmonella serovars belonging to the serogroups O:2, O:4, O:7 and O:9 were tested. The strains were derived from clinical, environmental and food samples collected at different European sites. Applying artificial neural networks, specific automated classifiers were built to discriminate typhoidal serovars from non-typhoidal serovars within each of the four serogroups. The accuracy of the classifiers was 99.9%, 87.0%, 99.5% and 99.0% for Salmonella Typhi, Salmonella Paratyphi A, B and Salmonella Paratyphi C, respectively. The IR Biotyper is a promising tool for fast and reliable detection of typhoidal Salmonella. Hence, IR biotyping may serve as a suitable alternative to conventional approaches for surveillance and diagnostic purposes.

scholarly journals The number of bacilli harboured by enteric carriers

1954 ◽  
Vol 52 (1) ◽  
pp. 67-70 ◽  
Author(s):  
Scott Thomson
Keyword(s):  
Pure Culture ◽  
Medical Officer ◽  
Salmonella Typhi ◽  
Enrichment Medium ◽  
Mental Hospitals ◽  
Culture Plate ◽  
Large Numbers ◽  
Paratyphi B ◽  
Almost All

Salmonella typhi or S. paratyphi B were found in very large numbers in the faeces of enteric carriers. Of twenty-four carriers, four were found negative by the fullest examination. Of the twenty found positive almost all harboured many millions of bacilli per gram of faeces.A minute inoculum of one drop (1/50 ml.) of a 1:1000 dilution of faeces on a culture plate only rarely failed to reveal all the positives without the use of an ‘enrichment’ medium and the result of such a procedure was a culture plate with virtually a pure culture of the pathogen.I am grateful to the Medical Superintendents of the Mental Hospitals at Cardiff, Bridgend and Denbigh, and the Medical Officer of Health for Brecon for submitting specimens for examination.

scholarly journals Utility of A Single Widal Test in The Diagnosis of Typhoid Fever

2012 ◽  
Vol 35 (2) ◽  
pp. 53-58 ◽  
Author(s):  
ABM Shahidul Alam ◽  
Fahim Ahmed Rupam ◽  
Farhana Chaiti
Keyword(s):  
Blood Culture ◽  
Typhoid Fever ◽  
Predictive Value ◽  
Salmonella Typhi ◽  
Definitive Diagnosis ◽  
Blood Cultures ◽  
Widal Test ◽  
Female Ratio ◽  
The Mean ◽  
Agglutinin Titer

Background & objectives: The clinical diagnosis of typhoid fever is difficult, as the presenting symptoms are often diverse and similar to those observed with other febrile illnesses. The definitive diagnosis of typhoid fever requires the isolation of Salmonella typhi or paratyphi from the patient concerned. Since patients often receive antibiotics prior to a confirmatory diagnosis, there is uncertainty that bacteria can be isolated from the blood cultures. Besides this, the facilities for blood culture are not always available or feasible. All these limitations have made Widal test the most utilized diagnostic test for typhoid fever. Many studies have produced data which had cast serious doubts on the value of the Widal Test and thus reappraisal of the role of a single Widal test is needed.Methods & materials: This study was carried out to determine the changes in clinical pattern of enteric fever. A total of 153 children, aged 0 to 14 years, diagnosed as typhoid fever (either positive blood culture for Salmonella typhi or paratyphi) were induced in the study. Of them, 86 children were with a definitive diagnosis of typhoid or paratyphoid fever as indicated by the isolation of S. typhi or S. paratyphi from the blood and 17 had negative blood culture but were clinically suspected of having typhoid fever. The control group was comprised of 50 children with non-typhoidal fevers The Widal test was carried out using rapid slide agglutination method and its accuracy was assessed by comparing the findings with that obtained through blood culture.Result: The mean age of the patients was 5.2 ± 2.8 years and the youngest and oldest patients were 0.7 and 14 years respectively and male to female ratio was roughly 1:1. Nearly one-quarter (24.6%) of the patients had been suffering from the disease for >10 days and the mean duration of illness was 8.2 ± 3.3 days. Widal Test result showed that an ‘O’ agglutinin titer of cut-off value e”1:40 gave a sensitivity of 87.2%, a specificity of 47.1%, a positive predictive value (PPV) of 89.2% and a negative predictive value (NPV) of 42.1%. The sensitivity and NPV decreased with the increase in titer levels and were 56.9% and 31.5% at cut-off value of e” 1:320, while the specificity and PPV increased with the increase in titer levels from 47.1% and 89.2% respectively at a titer of e”1:40 to 100% at a titer of e” 1:320. The ‘titer behaved in the same way as did the ‘O’ agglutinin titer. Similarly when H’ agglutinin was used the sensitivity and NPV decreased from 65% and 31.7% at a titer of e”1:40 to only 25% and 20% respectively at a titer of > 1:320, while specificity and PPV increased from 76.4% and 81.1% at >1:40 to 94.1% and 95.6% respectively at e” 1:320. When either ‘O’ or ‘H’ antibody titer of e”1:160 was used, a good sensitivity (71%), specificity (70.6%) and PPV (92.4%) resulted, though NPV decreased to 32.4%.Conclusion: The Widal test can be of diagnostic value when blood cultures are not available nor practically feasible.DOI: http://dx.doi.org/10.3329/bjch.v35i2.10377  Bangladesh J Child Health 2011; Vol 35 (2): 53-58

scholarly journals The dissemination of Salmonella typhi, S. paratyphi A and S. paratyphi B through the organs of the white mouse by oral infection

1960 ◽  
Vol 58 (3) ◽  
pp. 307-319 ◽  
Author(s):  
C. B. Gerichter
Keyword(s):  
Gall Bladder ◽  
Severe Infection ◽  
Blood Stream ◽  
Salmonella Typhi ◽  
Oral Infection ◽  
White Mouse ◽  
Mesenteric Lymph Nodes ◽  
Intraperitoneal Route ◽  
Paratyphi B ◽  
Micro Organisms

A dose of 5 × 109S. typhi (strain Ty2) and S. paratyphi B (strain HB3) administered to white mice orally, caused an infection of various organs of the mouse, namely: spleen, liver, kidneys, lungs, gall-bladder, mesenteric lymph nodes, jejunum and of the blood stream. The percentage of infected spleens was higher than that of other organs.With the above-mentioned dose of Ty2, the infection of the liver was found to be five times higher than that of the gall-bladder. The infection of the latter lasted for about 8–9 days, whereas that of the liver for 18–19 days.The bacteria appeared in the various organs: liver, spleen, kidneys, and lungs in about 2 min. after oral infection, and in the blood stream after about 20 sec.The speed and intensity of the invasion of micro-organisms from the gastrointestinal tract to the blood stream depends neither upon the volume of the dose (0·5 ml. or 0·1 ml.), nor upon the content of the mouse's stomach.The M.I.D. for the blood stream of the mouse by oral infection is about 5 × 105 bacteria for Ty2, HB3 and AH6.In blood samples collected by cardiac puncture 2–3 min. after oral infection, an average of 5 × 102 micro-organisms/ml. blood was found. The count of bacteria increased and reached its peak after 20 min. (about 3 × 103 bacteria). After that period, the number decreased: 1·6 × 103 after 1 hr., 8 × 102 after 2 hr. and 1·7 × 102 after 3 hr. In spite of this considerable decrease, the blood did not became sterile until after several days.In the infected spleen (by oral infection) an inverse process was observed: at the beginning only a small number of micro-organisms was found (about 5 × 10/100 mg. spleen), but afterwards the number of bacteria increased (1·2 × 102 after 24 hr. and 5 × 102 after 4 days).In mice infected by the subcutaneous route with a dose of 5 × 109 bacteria, the number of micro-organisms in the blood stream did not differ significantly from that found after oral infection, whereas infection by intraperitoneal route caused a severe infection. When 5 × 107 micro-organisms (LD50) were administered by intraperitoneal route, 107 bacteria appeared in the blood stream of the moribund mice while in the spleen about 4·1 × 107 were found.The author wishes to express his appreciation to Prof. I. Gurewitch and to Dr R. Rozansky from the Department of Clinical Microbiology, the Hebrew University-Hadassah Medical School, Jerusalem, for their advice and criticism.

scholarly journals Antibiogram of Salmonella Isolates from Blood with an Emphasis on Nalidixic Acid and Chloramphenicol Susceptibility in a Tertiary Care Hospital in Coastal Karnataka: A Prospective Study

2012 ◽  
Vol 4 (02) ◽  
pp. 074-077 ◽  
Author(s):  
Anup Kumar Shetty ◽  
Ichlampady Nagaraj Shetty ◽  
Zevita Venisha Furtado ◽  
Beena Antony ◽  
Rekha Boloor
Keyword(s):  
Blood Culture ◽  
Nalidixic Acid ◽  
Antibiotic Susceptibility ◽  
Enteric Fever ◽  
Salmonella Typhi ◽  
Multidrug Resistant ◽  
Care Hospital ◽  
First Line ◽  
Periodic Analysis ◽  
Paratyphi B

ABSTRACT Background: Enteric fever is caused by the serotypes Salmonella Typhi, Salmonella Paratyphi A, Salmonella Paratyphi B and Salmonella Paratyphi C. After emergence of multidrug resistant Salmonellae Ciprofloxacin, a fluorquinolone antibiotic was the first-line therapy. Treatment failure was observed with Ciprofloxacin soon and such strains showed in-vitro resistance to Nalidixic acid. Recent reports suggest re-emergence of Chloramphenicol sensitive strains and increasing Nalidixic acid resistance. This study is aimed at detecting the current trend in the antibiogram of Salmonella isolates from blood culture in coastal Karnataka, with an emphasis on antibiotic susceptibility of Nalidixic acid and Chloramphenicol and evaluate, if there is a need to modify the strategies in the antibiotic therapy for enteric fever. Materials and Methods: Blood samples received for culture in the laboratory between June 2009 and August 2011 was cultured in Brain Heart infusion broth, bile broth or in a commercial BACTEC culture media. The growth from blood cultures were processed for identification and antibiotic susceptibility as per standard methods. Antibiotic susceptibility for Ampicillin, Trimethoprim-sulphamethoxazole, Chloramphenicol, Ciprofloxacin, Ceftriaxone and Nalidixic acid were noted. Results: Out of 9053 blood culture specimens received, Salmonella was isolated from 103 specimens. There were 85 Salmonella Typhi isolates, 16 Salmonella Paratyphi A and two Salmonella Paratyphi B. Salmonella Typhi and Salmonella Paratyphi A showed the highest resistance to Nalidixic acid. Salmonella Typhi showed highest susceptibility to Ceftriaxone and Salmonella Paratyphi A to trimethoprim-sulphamethoxazole and Chloramphenicol. Two isolates were multidrug resistant. One Salmonella Paratyphi A was resistant to Ceftriaxone. Conclusion: Routine screening of Nalidixic acid susceptibility is practical to predict fluorquinolone resistance in Salmonella and preventing therapeutic failure while treating with it. It is worthwhile to consider replacing fluorquinolones with Chloramphenicol or Ceftriaxone as the first line of therapy for enteric fever. Periodic analysis of Salmonella antibiogram should be done to formulate the best possible treatment strategies.

scholarly journals Epidemiological Study of Salmonella typhi and Its Month-Wise Effect on Different Age Groups in Dehradun

2020 ◽  
pp. 256-260
Author(s):  
Sandhya Maurya ◽  
Chetna Kalra ◽  
Rupesh Kumar Mahto ◽  
Sandeep Singh ◽  
Narotam Sharma ◽  
...  
Keyword(s):  
Age Groups ◽  
Salmonella Typhi ◽  
Oral Route ◽  
Bacterial Disease ◽  
Widal Test ◽  
Igg Antibody ◽  
Contaminated Food ◽  
Waterborne Infection ◽  
Flagellar Antigen ◽  
Card Test

Introduction: Salmonella typhi is a bacterial disease caused by contaminated food and water, also known as foodborne and waterborne infection, it transmitted via faeco-oral route. Materials and Methods: A total of 204 clinical isolates were considered for its proposed study. IgM/IgG rapid card test (CTK Biotech) was used for the detection and Widal test (BEACON) was also performed for the same. Duration: March 2020 to November 2020. Results: A total of 204 blood samples were analyzed with clinically suspected cases of typhoid fever, out of which, some cases showed reactiveness and 50.98% showed negative for Salmonella typhi. Widal test showed reactive result for O Ag (Somatic Antigen) and H Ag (flagellar antigen) and 8.82% IgG and 42.64% (monthly) IgM antibody showed positive result. Conclusion: Typhoid IgM/IgG antibody rapid card test and Widal Antigen test, a simple and rapid method for the detection of Salmonella typhi bacterium in patient’s serum by serological techniques. Maximum number of positive cases were in the month of August, 2020 and September, 2020. The age group between 21-40 years were most infected by Salmonella typhi.

scholarly journals Prevalence of Intestinal Parasites and Salmonella typhi among Food Handlers Working in Catering Establishments of Public Institutes Found in Dawuro Zone, South-Western Ethiopia

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Abera Kumalo ◽  
Eyasu Gambura ◽  
Terfe Dodicho ◽  
Khawaja Shakeel Ahmed ◽  
Tamrat Balcha ◽  
...  
Keyword(s):  
Intestinal Parasites ◽  
Parasitic Infection ◽  
Public Health Problem ◽  
Salmonella Typhi ◽  
Sub Saharan Africa ◽  
Personal Hygiene ◽  
Food Handlers ◽  
Widal Test ◽  
Tissue Paper ◽  
Western Ethiopia

Background. Food borne disease, which is the result of ingestion of foodstuffs contaminated with microorganisms, parasites, or chemicals, encompasses a wide spectrum of illness and public health problem worldwide. Ethiopia is placed on second, third, and fourth position due to the highest burden of ascariasis, hookworm, and trichuriasis, respectively, in sub-Saharan Africa. The present study is aimed at determining the prevalence of Salmonella typhi and intestinal parasites among food handlers working in catering establishments of public institutes found in Dawuro Zone, South-Western Ethiopia. Methods. A cross-sectional study is conducted among food handlers working in catering establishments of public institutions found in Dawuro Zone from March to July 2019. The data was collected by using pretested structured questionnaires. Stool and blood samples were taken from each participant for parasitic examinations concurrently using direct and modified formol ether concentration wet smear techniques and Widal test by slide test and tube serial dilution technique, respectively. The data entered into Epi info version 3.5.1 and then exported into SPSS window version 20.0 for analysis. Logistic regressions were performed to assess the association between binary outcomes and different explanatory variables. P value <0.05 was considered statistically significant. Result. The study included 402 (293 females and 109 males) food handlers. Of 402 stool specimens, 20.4% were found to be positive for different parasite species, comprising protozoa (35.9%) and helminths (64.1%). A. lumbricoides was the most prevalent parasite (8.0%), followed by E. histolytica/dispar (4.23%). Twenty-six (6.5%) of food handlers were positive for Widal test. Ages ≥ 40 years (AOR: 0.436; 95% CI: 0.203, 0.937), attending no education (AOR: 2.142; 95% CI: 1.048, 4.378), not washing hands after using latrine (AOR: 4.355; 95% CI: 1.771, 10.708), not covering mouth with tissue paper (AOR: 0.530; 95% CI: 0.312, 0.899), no medical checkup (in the last four months) (AOR: 0.278; 95% CI: 0.116, 0.667), and untrimmed fingernails (AOR: 0.382; 95% CI: 0.229, 0.635) were significantly associated with intestinal parasitic or Salmonella typhi infections. Conclusion. The prevalence of intestinal parasitic infection (IPI) and Salmonella among food handlers in the present study is relatively high compared to other different studies conducted in developed and developing countries. Therefore, biannually screening of food handlers for intestinal parasites (IPs) and periodic deworming of infected cases along with provision of food safety measures focusing on personal hygiene and environmental sanitation are recommended to control the parasitic infection in food handlers.

scholarly journals Gambaran Hasil Uji Widal Berdasarkan Lama Demam pada Pasien Suspek Demam Tifoid

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Vika Rahma Velina ◽  
Akmal M. Hanif ◽  
Efrida Efrida
Keyword(s):  
Typhoid Fever ◽  
Medical Record ◽  
Salmonella Typhi ◽  
Definitive Diagnosis ◽  
Widal Test ◽  
Descriptive Research ◽  
Antibody Titers ◽  
O Antigens

AbstrakDiagnosis definitif demam tifoid adalah dengan biakan, tetapi pada beberapa daerah sering tidak tersedia fasilitas untuk biakan, maka cara lain untuk membantu menegakkan diagnosis yang praktis dan tersedia di rumah sakit yaitu uji Widal. Tujuan penelitian ini adalah untuk mengetahui gambaran hasil uji Widal pada pasien suspek demam tifoid. Penelitian ini dilakukan di Bagian Rekam Medik  RS Dr. M. Djamil Padang. Jenis penelitian ini adalah retrospektif deskriptif yang telah dilaksanakan dari Juli 2013 sampai Februari 2014. Jumlah sampel yang didapatkan adalah sebanyak 46 orang. Dari 46 sampel didapatkan hasil uji Widal dengan titer antibodi terhadap antigen O 1:80 sebanyak 6,51%, 1:160 sebanyak 73,89%, 1:320 sebanyak 19,54%, dan 1:640 sebanyak 0%. Titer antibodi terhadap antigen H 1:80 sebanyak 4,34%, 1:160 sebanyak 47,80%, 1:320 sebanyak 45,63%, dan 1:640 sebanyak 2,17%. Kesimpulan hasil studi ini ialah 1:160 adalah titer yang tersering ditemukan dengan titer antibodi terhadap antigen O tertinggi yakni 1:320 lebih sering ditemukan pada lama demam dengan rentang 6 – 8 hari sedangkan titer antibodi terhadap antigen H tertinggi yakni 1:640 ditemukan pada lama demam dengan rentang 6 – 8 hari.Kata kunci: demam tifoid, uji Widal, Salmonella typhi AbstractThe definitive diagnosis of typhoid fever is  proven by culture, but in some areas is often no way of culture. There is another examination that has been found to help the diagnosis that is practical and available in hospital which is called Widal test. The objective of this study was to describe the results of Widal test in patients with suspected typhoid fever. This research was conducted at the medical record of Dr. M. Djamil Padang Hospital. This is a descriptive research which was held in July 2013 – February 2014. The number of samples obtained are as many as 46 people.  The 46 samples obtained Widal test, the results was made with titres of antibodies against O antigens 1:80 as much as 6,51%, 1:160 as much as 73,89%, 1:320 as much as 19,54%, and 1:640 as much as  0%. Titers of antibodies against H antigens 1:80 as much as 4,34%, 1:160 as much as 47,80%, 1:320 as much as 45,63%, and 1:640 as much as 2,17%. The conclusion is 1:160 is the most often titres found in patients with suspected typhoid fever with the highest value of antibody titers against the O antigens that is 1:320, is more common in duration of fever with a range of 6-8 days and the highest value of antibody titers against H antigens that is 1:640 has found in duration of fever with range 6-8 days.Keywords: typhoid fever, Widal test, Salmonella typhi

scholarly journals Comparison of results obtained by widal agglutination test & polymerase chain reaction among clinically suspected typhoid fever cases

2015 ◽  
Vol 30 (2) ◽  
pp. 46-50
Author(s):  
Shafinaz Khan ◽  
Md Ruhul Amin Miah ◽  
Shammin Haque ◽  
Chowdhury Rafia Naheen
Keyword(s):  
Polymerase Chain Reaction ◽  
Blood Culture ◽  
Typhoid Fever ◽  
False Negative ◽  
Salmonella Typhi ◽  
Widal Test ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Positive Results ◽  
Prior Antibiotic Treatment

The diagnosis of typhoid fever currently depends on isolation of Salmonella Typhi from blood. The sensitivity of blood culture is very low due to prior antibiotic treatment which is a common practice in Bangladesh. The sensitivity of blood culture also decreases at later stage of the disease. Widal test is the most utilized test in Bangladesh next to blood culture because it is inexpensive, less invasive. But the result of the test is controversial due to false negative & false positive results in some cases.  In this study, a recently introduced polymerase chain reaction-based technique (which has 100% specificity for S. Typhi) was compared with widal test among 80 clinically suspected typhoid fever cases.  Among 80 cases, the respective figures of positivity for PCR & widal test were 70% & 43.75% respectively.  It can be concluded that PCR based technique is more sensitive & much superior to widal for diagnosis of typhoid fever. DOI: http://dx.doi.org/10.3329/bjpp.v30i2.22683 Bangladesh J Physiol Pharmacol 2014; 30(2): 46-50

scholarly journals USE OF WIDAL TEST IN DIAGNOSIS OF TYPHOID FEVER IN NORTH INDIAN POPULATION BY ESTIMATING BASELINE TITER IN CONTROL GROUP

2017 ◽  
Vol 10 (7) ◽  
pp. 251
Author(s):  
Shetty Jeevan
Keyword(s):  
Typhoid Fever ◽  
Healthy Volunteers ◽  
Enteric Fever ◽  
Early Recognition ◽  
Test Group ◽  
Salmonella Typhi ◽  
Control Group ◽  
Age Group ◽  
Widal Test ◽  
Medical College

Objective: This study was undertaken to establish a cutoff significant titer for Widal test using healthy volunteers as control group. Utilizing the baseline titer obtained from the control group, a diagnosis of typhoid fever was made in the test group comprising outpatients and inpatients. Methods: Blood samples were collected from healthy volunteers and patients attending G.S Medical College and Hospital, Pilkhuwa, over a period of 6 months from September 2016 to March 2017. Antibodies to Salmonella typhi (TO, TH) and Paratyphi A (AH) and Paratyphi B (BH) are determined by this tube agglutination test. A total of 124 healthy controls and 303 patients having clinical suspicion of typhoid fever were subjected to Widal test. Results: In healthy control group, titer TO ≥20 was observed in 43 (34.7%), TO ≥40 in 48 (38.7%), TO≥80 in 25 (20.2%), and titer TO ≥160, TO ≥320 was observed in none of the control group. Titer TH ≥40 in 58 (46.8%), AH ≥40 in 7 (5.6%), and BH ≥40 in 13 (10.5%) were observed in the control group. Among the test group, 96 (31.7%) sera were positive out of 303 clinically suspected enteric fever by the Widal test. Among different age group studied, 34 (46.6%) patients belonged to the age group of 11-20 years which formed the highest followed by the age group of 21-30 years (33.3%). Conclusion: Based on the study, a cutoff titer of ≥160 for anti-O and anti-H antibodies and titer of ≥80 for anti-AH and anti-BH antibodies be considered as significant titer in diagnosis of enteric fever in this region. The baseline titer helps in early recognition and treatment of this serious health problem.

Sign in / Sign up

Export Citation Format

Share Document