1.Amplicon-Based MinION Sequencing Complements Severe Fever With Thrombocytopenia Syndrome (SFTS) Diagnosis via Real-Time RT-PCR in Patients With Suspected SFTS
Sara P. PRAYITNO ; Yeong Geon CHO ; Eun Sil KIM ; Kyungmin PARK ; Seonghyeon LEE ; Augustine NATASHA ; Jieun PARK ; Jin-Won SONG ; Yang Soo KIM ; Seung Soon LEE ; Won-Keun KIM
Journal of Korean Medical Science 2025;40(19):e69-
Background:
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a lethal threat.Increasing Severe fever with thrombocytopenia syndrome (SFTS) risk in Asia and the United States stems from the spread of natural host, Haemaphysalis longicornis. Rapid and accurate SFTSV molecular diagnosis is crucial for treatment decisions, reducing fatality risk.
Methods:
Blood samples from 17 suspected SFTS patients at Chuncheon Sacred Heart Hospital (September-December 2022) were collected. SFTSV was diagnosed using two reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assays from Gangwon Institute of Health and Environment (RT-qPCR/GIHE) and Asan Medical Center (RT-qPCR/AMC). To address RT-qPCR disparities, amplicon-based MinION sequencing traced SFTSV genomic sequences in clinical samples.
Results:
In two samples (N39 and N50), SFTSV was detected in both RT-qPCR/GIHE and RTqPCR/AMC. Among 11 samples, RT-qPCR/AMC exclusively detected SFTSV. In four samples, both assays yielded negative results. Amplicon-based MinION sequencing enabled nearly whole-genome sequencing of SFTSV in samples N39 and N50. Among 11 discordant samples, five contained significant SFTSV reads, aligning with the RT-qPCR/AMC findings. However, another six samples showed insufficient viral reads in accordance with the negativity observed in RT-qPCR/GIHE. The phylogenetic pattern of SFTSV demonstrated N39 formed a genetic lineage with genotype A in all segments. SFTSV N50 grouped with the B-1 sub-genotype for L segment and B-2 sub-genotype for the M and S segments, indicating genetic reassortment.
Conclusion
The study demonstrates the robust sensitivity of amplicon-based MinION sequencing for the direct detection of SFTSV in clinical samples containing ultralow copies of viral genomes. Next-generation sequencing holds potential in resolving SFTSV diagnosis discrepancies, enhancing understanding of diagnostic capacity, and risk assessment for emerging SFTSV.
2.Amplicon-Based MinION Sequencing Complements Severe Fever With Thrombocytopenia Syndrome (SFTS) Diagnosis via Real-Time RT-PCR in Patients With Suspected SFTS
Sara P. PRAYITNO ; Yeong Geon CHO ; Eun Sil KIM ; Kyungmin PARK ; Seonghyeon LEE ; Augustine NATASHA ; Jieun PARK ; Jin-Won SONG ; Yang Soo KIM ; Seung Soon LEE ; Won-Keun KIM
Journal of Korean Medical Science 2025;40(19):e69-
Background:
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a lethal threat.Increasing Severe fever with thrombocytopenia syndrome (SFTS) risk in Asia and the United States stems from the spread of natural host, Haemaphysalis longicornis. Rapid and accurate SFTSV molecular diagnosis is crucial for treatment decisions, reducing fatality risk.
Methods:
Blood samples from 17 suspected SFTS patients at Chuncheon Sacred Heart Hospital (September-December 2022) were collected. SFTSV was diagnosed using two reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assays from Gangwon Institute of Health and Environment (RT-qPCR/GIHE) and Asan Medical Center (RT-qPCR/AMC). To address RT-qPCR disparities, amplicon-based MinION sequencing traced SFTSV genomic sequences in clinical samples.
Results:
In two samples (N39 and N50), SFTSV was detected in both RT-qPCR/GIHE and RTqPCR/AMC. Among 11 samples, RT-qPCR/AMC exclusively detected SFTSV. In four samples, both assays yielded negative results. Amplicon-based MinION sequencing enabled nearly whole-genome sequencing of SFTSV in samples N39 and N50. Among 11 discordant samples, five contained significant SFTSV reads, aligning with the RT-qPCR/AMC findings. However, another six samples showed insufficient viral reads in accordance with the negativity observed in RT-qPCR/GIHE. The phylogenetic pattern of SFTSV demonstrated N39 formed a genetic lineage with genotype A in all segments. SFTSV N50 grouped with the B-1 sub-genotype for L segment and B-2 sub-genotype for the M and S segments, indicating genetic reassortment.
Conclusion
The study demonstrates the robust sensitivity of amplicon-based MinION sequencing for the direct detection of SFTSV in clinical samples containing ultralow copies of viral genomes. Next-generation sequencing holds potential in resolving SFTSV diagnosis discrepancies, enhancing understanding of diagnostic capacity, and risk assessment for emerging SFTSV.
3.Amplicon-Based MinION Sequencing Complements Severe Fever With Thrombocytopenia Syndrome (SFTS) Diagnosis via Real-Time RT-PCR in Patients With Suspected SFTS
Sara P. PRAYITNO ; Yeong Geon CHO ; Eun Sil KIM ; Kyungmin PARK ; Seonghyeon LEE ; Augustine NATASHA ; Jieun PARK ; Jin-Won SONG ; Yang Soo KIM ; Seung Soon LEE ; Won-Keun KIM
Journal of Korean Medical Science 2025;40(19):e69-
Background:
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a lethal threat.Increasing Severe fever with thrombocytopenia syndrome (SFTS) risk in Asia and the United States stems from the spread of natural host, Haemaphysalis longicornis. Rapid and accurate SFTSV molecular diagnosis is crucial for treatment decisions, reducing fatality risk.
Methods:
Blood samples from 17 suspected SFTS patients at Chuncheon Sacred Heart Hospital (September-December 2022) were collected. SFTSV was diagnosed using two reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assays from Gangwon Institute of Health and Environment (RT-qPCR/GIHE) and Asan Medical Center (RT-qPCR/AMC). To address RT-qPCR disparities, amplicon-based MinION sequencing traced SFTSV genomic sequences in clinical samples.
Results:
In two samples (N39 and N50), SFTSV was detected in both RT-qPCR/GIHE and RTqPCR/AMC. Among 11 samples, RT-qPCR/AMC exclusively detected SFTSV. In four samples, both assays yielded negative results. Amplicon-based MinION sequencing enabled nearly whole-genome sequencing of SFTSV in samples N39 and N50. Among 11 discordant samples, five contained significant SFTSV reads, aligning with the RT-qPCR/AMC findings. However, another six samples showed insufficient viral reads in accordance with the negativity observed in RT-qPCR/GIHE. The phylogenetic pattern of SFTSV demonstrated N39 formed a genetic lineage with genotype A in all segments. SFTSV N50 grouped with the B-1 sub-genotype for L segment and B-2 sub-genotype for the M and S segments, indicating genetic reassortment.
Conclusion
The study demonstrates the robust sensitivity of amplicon-based MinION sequencing for the direct detection of SFTSV in clinical samples containing ultralow copies of viral genomes. Next-generation sequencing holds potential in resolving SFTSV diagnosis discrepancies, enhancing understanding of diagnostic capacity, and risk assessment for emerging SFTSV.
4.Amplicon-Based MinION Sequencing Complements Severe Fever With Thrombocytopenia Syndrome (SFTS) Diagnosis via Real-Time RT-PCR in Patients With Suspected SFTS
Sara P. PRAYITNO ; Yeong Geon CHO ; Eun Sil KIM ; Kyungmin PARK ; Seonghyeon LEE ; Augustine NATASHA ; Jieun PARK ; Jin-Won SONG ; Yang Soo KIM ; Seung Soon LEE ; Won-Keun KIM
Journal of Korean Medical Science 2025;40(19):e69-
Background:
Severe fever with thrombocytopenia syndrome virus (SFTSV) is a lethal threat.Increasing Severe fever with thrombocytopenia syndrome (SFTS) risk in Asia and the United States stems from the spread of natural host, Haemaphysalis longicornis. Rapid and accurate SFTSV molecular diagnosis is crucial for treatment decisions, reducing fatality risk.
Methods:
Blood samples from 17 suspected SFTS patients at Chuncheon Sacred Heart Hospital (September-December 2022) were collected. SFTSV was diagnosed using two reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assays from Gangwon Institute of Health and Environment (RT-qPCR/GIHE) and Asan Medical Center (RT-qPCR/AMC). To address RT-qPCR disparities, amplicon-based MinION sequencing traced SFTSV genomic sequences in clinical samples.
Results:
In two samples (N39 and N50), SFTSV was detected in both RT-qPCR/GIHE and RTqPCR/AMC. Among 11 samples, RT-qPCR/AMC exclusively detected SFTSV. In four samples, both assays yielded negative results. Amplicon-based MinION sequencing enabled nearly whole-genome sequencing of SFTSV in samples N39 and N50. Among 11 discordant samples, five contained significant SFTSV reads, aligning with the RT-qPCR/AMC findings. However, another six samples showed insufficient viral reads in accordance with the negativity observed in RT-qPCR/GIHE. The phylogenetic pattern of SFTSV demonstrated N39 formed a genetic lineage with genotype A in all segments. SFTSV N50 grouped with the B-1 sub-genotype for L segment and B-2 sub-genotype for the M and S segments, indicating genetic reassortment.
Conclusion
The study demonstrates the robust sensitivity of amplicon-based MinION sequencing for the direct detection of SFTSV in clinical samples containing ultralow copies of viral genomes. Next-generation sequencing holds potential in resolving SFTSV diagnosis discrepancies, enhancing understanding of diagnostic capacity, and risk assessment for emerging SFTSV.
5.Necrotizing fasciitis from Tilapia (Oreochromis niloticus) fin prick: A case report
Marjyl R. Patacsil ; Endrik H. Sy ; Faith M. Garcia ; Vladi Natasha Q. Cruz ; Haydee D. Danganan
The Filipino Family Physician 2025;63(1):116-119
The role of a family physician in the management ofVibrio vulnificusinfection is multifaceted, encompassing prevention, early diagnosis, treatment, and education.Vibrio vulnificusis a Gram-negative, rod-shaped bacterium and an opportunistic human pathogen. Infection is common inV. vulnificusspecies and it can potentially cause a necrotizing fasciitis which is life threatening. Presented here is a case of a 39-year-old pregnant female who came in at the Emergency Department due to a noticeable swelling and severe pain on the third digit of her left hand after it was punctured while cleaning fresh Tilapia. The patient was then urgently referred to an orthopedic specialist for further management. Given the risk of compartment syndrome or necrotizing fasciitis the patient underwent amputation of the third digit of left hand. Patient underwent psychosocial and supportive intervention given by the family physician anticipating challenges in her illness trajectory. The paper emphasizes the role of family physicians in the comprehensive management ofVibrio vulnificusinfection, traversing all levels of prevention. Through educating patients and the community, along with providing timely and appropriate medical care, we can significantly reduce the morbidity and mortality associated with this serious infection.
Human ; Bacteria ; Female ; Adult: 25-44 Yrs Old ; Fasciitis, Necrotizing
6.Dropped head syndrome due to chronic alcoholism–induced electrolyte imbalances: A case report.
Maureen Kaye M. REYES-ALUNES ; Endrik H. SY ; Joseph L. ALUNES ; Faith M. GARCIA ; Vladi Natasha Q. CRUZ
The Filipino Family Physician 2025;63(2):183-185
Dropped head syndrome is a rare condition characterized by the inability to maintain an upright head posture. It is commonly associated with neuromuscular disorders and is more frequently observed among the elderly population. While the exact cause of dropped head syndrome can vary, one potential cause is electrolyte imbalance, specifically hypokalemia, which can be induced by chronic alcoholism. Chronic alcohol use disorder could be traced back from psychosocial factors which can be identified by using various family assessment tools.
This is a case of a 40-year-old male who presented with a sudden inability to lift his head after a two-week long alcoholic beverage intake.
The case highlights the importance of the biopsychosocial approach in primary care, which offers holistic management by addressing not only medical problems but also the psychosocial factors that contribute to the patient’s clinical presentation.
Human ; Male ; Adult: 25-44 Yrs Old ; Dropped Head Syndrome ; Alcohol Use Disorder ; Alcoholism
7.Effects of Residential Proximity to Industrial Zone on Respiratory Symptoms among Residents in Parit Raja, Batu Pahat
Khairul Nizam Mohd Isa ; Nur Afza Natasha Md Som ; Juliana Jalaludin ; Nor Haslina Hashim
Malaysian Journal of Medicine and Health Sciences 2024;20(No.1):168-174
Introduction: The industrial park in the district of Parit Raja, Batu Pahat resulted in rapid growth of the town during
the last 20 years and has been a reason of concern that this park also has contributed greatly to the problem of air
pollution. The aim of this study was to evaluate the association between industrial air pollution and respiratory symptoms in adults living in the Parit Raja. Methods: A comparative cross-sectional study was undertaken among residents
in the district of Parit Raja, Batu Pahat, Johor, Malaysia. A total of 110 residents aged between 19 and 65 years were
randomly selected and information on personal characteristics and respiratory symptoms was obtained through a
validated questionnaire. The prevalence of respiratory symptoms was compared between residents recruited from
the areas situated about 5km radius of the industrial park (exposed) and >5km radius from the industrial park (comparative). Results: A total of 34.5% and 25.5% of adults from the exposed group reported experiencing coughing for
the last 3 months and chest tightness for the last 3 years. The logistic regression models showed that symptoms of
coughing was associated with the exposed group (aOR=6.34, 95% CI=2.08-19.35), male respondents (aOR=3.18,
95% CI=1.10-9.16) and who stay in Part Raja for more than 14 years (aOR=3.16, 95% CI=1.14-8.79). Conclusion:
This study demonstrated that long-term air pollution exposures are consistently associated with respiratory symptoms
in residents living in the proximity of industrial parks. Therefore, public health initiatives that aim to provide more
conducive environment are needed, especially for residents living near industrial parks.
8.Cardiocerebral infarction presenting as Opalski Syndrome: A case report
Paul Benedict V. Budiongan ; Natasha Fabiañ ; a-Wabe
Philippine Journal of Internal Medicine 2024;62(1):318-323
Introduction:
Opalski Syndrome is a rare type of stroke variant presenting with signs of lateral medullary syndrome plus
ipsilateral hemiparesis. A confirmed myocardial infarction simultaneously occurring with this acute ischemic stroke
syndrome makes this an even more challenging case of Cardiocerebral infarction.
Case:
The patient is a 48-year-old female, a known diabetic and asthmatic, and was seen due to a 3-day history of sudden
onset of non-rotatory dizziness associated with diplopia, non-projectile vomiting, numbness of the left side of the face and
lingual dysarthria. She was initially admitted in a primary hospital wherein she developed chest pain, dyspnea and
diaphoresis. She was transferred and was received with findings of miosis of the left eye, rotational nystagmus, left
dysmetria, decreased pain and temperature sensation on the right extremities, left central facial palsy, tongue deviation to
the left side, left hemiparesis and upward Babinski on the left. We localize this lesion on the left lateral medullary area with
involvement of the caudal left corticospinal tract. Hence, a clinical impression of Opalski Syndrome was made. This was
confirmed with cranial MRI findings of T2/FLAIR hyperintense focus involving the left lateral aspect of the medulla.
The patient’s Troponin I was also elevated and she was managed as a case of acute coronary syndrome - NSTEMI. Hence,
a diagnosis of Type III Cardiocerebral infarction was made. Medical intervention was started with dual antiplatelet therapy
and anticoagulation with noted clinical improvement.
Conclusion
This case report highlights the diagnosis of Opalski Syndrome in a patient also presenting with Cardiocerebral
infarction. There should be prompt recognition of the following disease entities to have an effective treatment, avoid cardiac
and neurologic sequelae, and achieve an overall favorable prognosis.
Lateral Medullary Syndrome
9.Case report: Spontaneous resolution of acquired perforating collagenosis following insect bite
Natasha G. Manzo ; Maria Patricia A. Chavez
Journal of the Philippine Dermatological Society 2024;33(Suppl 1):1-2
Acquired perforating collagenosis (APC) is a rare dermatological condition characterized by the spontaneous eruption of skin-colored or erythematous papules or nodules that eventually ulcerate and exude collagenous material. The exact etiology of APC remains unclear, although various triggers, including infections, medications, autoimmune diseases, and trauma, have been implicated.
This case report presents a 63-year-old female with a history of diabetes who developed erythematous papules and plaques topped with thick, yellowish, hyperkeratotic, adherent crusts on the upper back following an insect bite. Histopathological examination confirmed the diagnosis of APC, characterized by a cup-shaped invagination in the epidermis containing degenerated collagen bundles and basophilic material. Masson-trichrome staining showed transepidermal elimination of the collagen fibers. Patient was initially prescribed tretinoin 0.1% cream to be applied 2x a day. However, patient was not able to apply prescribed medications. Interestingly, without any specific treatment, the patient’s symptoms gradually improved over 3 months and eventually resolved completely.
This case report highlights the spontaneous resolution of APC in a patient following an insect bite. While most cases of APC require medical intervention, this case demonstrates the potential for spontaneous healing in certain individuals. Further research is needed to understand the factors that influence the course of APC and to identify potential predictors of spontaneous resolution.
Human ; Female ; Middle Aged: 45-64 Yrs Old ; Collagen ; Insect Bites ; Insect Bites And Stings
10.Development and validation of the Salt Intake-Related Knowledge, Attitude, and Practice Questionnaire for Malaysian adults
Zainorain Natasha Zainal Arifen ; Ngoh Wan Hwah ; Hng Jie Wei ; Siti Aishah Ismail ; Maryam Hanis Fairuzam ; Hasnah Haron
Malaysian Journal of Nutrition 2024;30(No.1):73-86
Introduction: Malaysian adults consume excessive amounts of salt daily, which
could lead to hypertension. Understanding knowledge, attitudes, and practices
(KAP) surrounding salt intake is crucial for designing effective interventions to
reduce excessive consumption and its associated health risks. Therefore, this study
aimed to adapt an existing salt intake-related KAP questionnaire that was previously
employed in a local population-based survey and to validate and test its reliability.
Methods: This cross-sectional study comprised two phases: (1) adaptation, content
validation (CV), and face validation (FV); (2) pilot testing and reliability testing. CV
and FV involved a total of seven experts and ten Malaysian adults from the Klang
Valley, respectively. Pilot testing involved 139 Malaysian adults to determine the
questionnaire’s reliability. Content validity index (CVI) and Face validity index
(FVI) values were calculated to analyse CV and FV. Reliability of each domain was
analysed by obtaining Cronbach’s alpha (α) values. Results: A self-administered
questionnaire comprising six items each for knowledge, attitude, and practice was
developed. The questionnaire demonstrated acceptable item-level CVI (I-CVI) and
item-level FVI (I-FVI) values of at least 0.83, indicating that the items were relevant,
clear, non-ambiguous, and simple. Reliability test showed acceptable α values
of at least 0.70 for each domain, suggesting that the questionnaire was reliable.
Conclusion: This tool could be considered valid and reliable for assessing the level
of KAP towards salt intake among adults in Malaysia.


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