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Hiroyuki Fujikura · SciRah

Researcher profile · Semantic Scholar

Hiroyuki Fujikura

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Hiroyuki Fujikura — researcher profile on SciRah

h-index: 7
Works: 16
Citations: 165

Most-cited papers

Another false-positive problem for a SARS-CoV-2 antigen test in Japan
Taku Ogawa, T. Fukumori, Yuji Nishihara, T. Sekine +6 more
2020Journal of Clinical Virology55 citations Open access
Semantic Scholar
Pneumococcal meningitis in adults in 2014–2018 after introduction of pediatric 13-valent pneumococcal conjugate vaccine in Japan
B. Chang, Kosuke Tamura, Hiroyuki Fujikura, H. Watanabe +26 more
2021Scientific Reports25 citations Open access
Semantic Scholar
Dynamic changes in clinical characteristics and serotype distribution of invasive pneumococcal disease among adults in Japan after introduction of the pediatric 13-valent pneumococcal conjugate vaccine in 2013-2019.
K. Tamura, B. Chang, R. Shimbashi, H. Watanabe +17 more
2022Vaccine21 citations
Semantic Scholar
Factors associated with viral clearance periods from patients with COVID-19: A retrospective observational cohort study
N. Hirai, Y. Nishioka, T. Sekine, Yuji Nishihara +14 more
2021Journal of Infection and Chemotherapy14 citations Open access
Semantic Scholar
Mycobacterium wolinskyi Peritonitis after Peritoneal Catheter Embedment Surgery
Hiroyuki Fujikura, K. Kasahara, Y. Ogawa, N. Hirai +13 more
2017Internal medicine14 citations Open access
Semantic Scholar
Pulmonary involvement of secondary syphilis
Y. Ogawa, Y. Imai, S. Yoshihara, Hiroyuki Fujikura +7 more
2018International Journal of STD and AIDS12 citations
Semantic Scholar
Characteristics of health problems in returned overseas travelers at a tertiary teaching hospital in a suburban area in Japan.
Kazuki Hirata, Taku Ogawa, Hiroyuki Fujikura, Y. Ogawa +8 more
2018Journal of Infection and Chemotherapy7 citations
Semantic Scholar
[Pharmacokinetics of 5-FU after S-1 oral administration for adjuvant chemotherapy in gastric cancer patients].
H. Matsumoto, T. Hirai, Y. Hirabayashi, Haruaki Murakami +8 more
2007Gan to kagaku ryoho. Cancer & chemotherapy5 citations
Semantic Scholar
Molecular diagnosis and characterization of a culture-negative mycotic aneurysm due to ST54 Haemophilus influenzae type b with PBP 3 alterations.
N. Hirai, K. Kasahara, Hiroyuki Fujikura, S. Yoshihara +8 more
2018Journal of Infection and Chemotherapy4 citations
Semantic Scholar
Acute acalculous cholecystitis following extended administration of nirmatrelvir/ritonavir for persistent SARS-CoV-2 infection.
Wataru Ito, Tatsuya Fukumori, Nao Asaoka, N. Imakita +12 more
2024Journal of Infection and Chemotherapy2 citations
Semantic Scholar
Financial Burden as a Potential Barrier to Vaccine Completion in Post-hematopoietic Stem Cell Transplant Patients in Japan
Taku Ogawa, N. Hirai, Hiroyuki Fujikura, N. Imakita +1 more
2024Cureus2 citations Open access
Semantic Scholar
Epidemiologic Trends and Distributions of Imported Infectious Diseases Among Travelers to Japan Before and During the COVID-19 Pandemic, 2016 to 2021: A Descriptive Study
A. Kasamatsu, Kazuhiko Kanou, Munehisa Fukusumi, Y. Arima +14 more
2023Journal of Epidemiology2 citations Open access
Semantic Scholar
Chorioamnionitis and early pregnancy loss caused by ampicillin-resistant non-typeable Haemophilus influenzae.
Yuji Nishihara, N. Hirai, T. Sekine, Naoshige Okuda +11 more
2023IDCases2 citations Open access
Semantic Scholar
Graft-duodenal fistula as a cause of recurrent bacteremia
Hiroyuki Fujikura, N. Imakita, Taku Ogawa, K. Kasahara
2022Infection1 citations
Semantic Scholar
Travelers’ vaccines and their adverse events in Nara, Japan
Taku Ogawa, N. Hirai, N. Imakita, Hiroyuki Fujikura +5 more
2021Open Medicine0 citations Open access
Semantic Scholar
A Case of Spontaneous Esophageal Rupture in an Elderly Female Induced by Swallowing
T. Majima, M. Kimoto, Hiroyuki Fujikura
20000 citations
Semantic Scholar

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K. Kasahara×11
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K. Kasahara — researcher profile on SciRah
Taku Ogawa×10
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N. Hirai×9
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Munehisa Fukusumi — researcher profile on SciRah