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Author(s):  
Marina V. Fedoseenko ◽  
Leyla S. Namazova-Baranova ◽  
Elena A. Vishneva ◽  
Svetlana V. Tolstova ◽  
Arevaluis M. Selvyan ◽  
...  

Background. Modern preventive vaccination is intended to protect and enhance the health of every person considering age and health issues. Vaccination of children with chronic diseases in our country remains extremely topical and arguable problem that associated with many pending issues for doctors of various specialties, including those working as primary care specialists.Objective. The aim of the study is to develop major approaches and to prove scientifically the efficacy and safety of preventive vaccination for children with various chronic diseases.Methods. We have conducted comprehensive study of 100 children aged from 1 month to 17 years 11 months. Children were divided into 4 groups according to the specific disease. Vaccinal and infectious history was analyzed. The post-vaccination period was estimated due to the results of the questionnaire completed by parents. Vaccination immunogenicity was estimated based on the results of the level of specific antibodies to various controlled infections (measles, rubella, parotitis, hepatitis B, pertussis, haemophilus influenza type b).Results. Protective titers of antibodies against haemophilus influenza type b were revealed in 96.2% of all examined patients, tetanus and hepatitis B — in 95.2%, against pertussis — in 92.5%, rubella — in 91%, measles — in 87.5%, parotitis — in 71.9%, chickenpox — in 69% children a month after the completed vaccination. The postvaccinal period was characterized as favorable in most patients. Major changes in overall health status occurred after vaccination in 42% of children was the following: subfebrile fever, capriciousness, or fatigue. Local reactions have developed only in 15% of cases.Conclusion. The results of this study have demonstrated the preventive vaccination efficacy and safety in children with various chronic diseases


2021 ◽  
pp. 7-9
Author(s):  
S. V. Nikolaeva ◽  
Yu. N. Khlypovka ◽  
E. K. Shushakova ◽  
N. A. Meshkova ◽  
D. A. Khavkina ◽  
...  

The objective. To evaluate the frequency and laboratory characteristics of pneumonia in children when influenza is combined with other respiratory viruses.Materials and methods. We examined 72 children aged 1 month to 17 years who were hospitalized in a specialized hospital in 2017–2019 with influenza type A (72 %) or B (28 %). The main group included 36 patients who had a laboratory-confirmed combination of influenza with other respiratory viruses, and the comparison group included 36 cases in which influenza was the only pathogen detected.Results. The analysis of the frequency of complications showed that in the main group, pneumonia developed significantly more often – in 22 % (8 children), and in the comparison group – in 6 % (2 children, p < 0.05).Conclusions. 1) The combination of influenza with other respiratory viruses is a risk factor for the development of pneumonia in children. 2) There are no significant changes in the indicators of clinical blood analysis in pneumonia developing against the background of influenza, including in combination with other respiratory viruses.


2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Christy Tabarani ◽  
Stephen A. Fletcher ◽  
Gloria P. Heresi ◽  
Susan H. Wootton

2021 ◽  
Author(s):  
Grace Nabakooza ◽  
David Collins Owuor ◽  
Zaydah R. de Laurent ◽  
Nicholas Owor ◽  
John Timothy Kayiwa ◽  
...  

Background: Genetic characterisation of circulating influenza viruses is essential for vaccine selection and mitigation of viral transmission. The current scantiness of viral genomic data and underutilisation of advanced molecular analysis methods on influenza viruses circulating in Africa has limited their extensive study and representation in the global influenza ecology. We aimed to sequence influenza type-A viruses (IAVs) that previously circulated in Uganda and characterised their genetic relatedness to the vaccine viruses and publicly available Africa IAVs. Methods: This was an observational study nested to the Uganda national influenza surveillance programme. We used Next-generation sequencing to locally generate genomes from 116 A(H1N1)pdm09 and 118 A(H3N2) viruses collected between 2010 and 2018 from 7 districts across Uganda. A total of 206 hemagglutinin (HA), 207 neuraminidase (NA), and 213 matrix protein (MP) sequences were genetically compared to the WHO-recommended vaccines and other viruses isolated from Africa since 1994. Viral temporal and spatial divergence and circulating genetic clades were characterised using phylogenetic methods. Findings: We successfully generated gene sequences for 91.9% (215/234) viruses. Uganda A(H1N1)pdm09 and A(H3N2) virus HA, NA, and MP proteins had 96.36-99.09%, 96.49-99.39%, and 97.48-99.95% amino acid similarity, respectively, to vaccines recommended from 2010 through 2020. The local viruses incorporated amino acid substitutions (AAS) in their antigenic, receptor binding, and glycosylation sites each year causing them to antigenically drift away from vaccines. For seasons when vaccine formulations differed, Uganda IAV antigenic sites had 1-2 extra AAS relative to the Southern than Northern hemisphere vaccine viruses. All Uganda IAVs carried the adamantine-resistance marker S31N but not the neuraminidase inhibitor (NAI) resistance markers H274Y and H275Y. However, some A(H1N1)pdm09 viruses had permissive substitutions V234I, N369K, and V241I typical of NAI-resistant viruses. The 2017-2018 A(H1N1)pdm09 viruses belonged to global genetic clade 6B.1, while the A(H3N2) viruses isolated in 2017 belonged to clades 3C.2a and 3C.3a. Uganda IAVs obtained before 2016 clustered distinctly from other Africa viruses while later viruses mixed with other Africa, especially Kenya and Congo, and global viruses. Several unique viral lineages (bootstrap >90) persisted in Uganda and other countries for 1-3 years. Interpretation: The study reveals Uganda as part of the global influenza ecology with continuous importation, antigenic drift, and extensive local transmission of IAVs, presenting a potential risk of future outbreaks. For a country with limited health resources and where social distancing is not sustainable, viral prevention by vaccination should be prioritized. The notable viral diversity in Africa is a warning to countries to broaden and incorporate genome analysis in routine surveillance to monitor circulating and detect new viruses. This knowledge can inform virus selection for vaccine production and assist in developing cost-effective virus control strategies.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Enrique Ibarra-Zapata ◽  
Darío Gaytán-Hernández ◽  
Verónica Gallegos-García ◽  
Claudia Elena González-Acevedo ◽  
Thuluz Meza-Menchaca ◽  
...  

The aim of this study was to estimate the territory at risk of establishment of influenza type A (EOITA) in Mexico, using geospatial models. A spatial database of 1973 outbreaks of influenza worldwide was used to develop risk models accounting for natural (natural threat), anthropic (man-made) and environmental (combination of the above) transmission. Then, a virus establishment risk model; an introduction model of influenza A developed in another study; and the three models mentioned were utilized using multi-criteria spatial evaluation supported by geographically weighted regression (GWR), receiver operating characteristic analysis and Moran’s I. The results show that environmental risk was concentrated along the Gulf and Pacific coasts, the Yucatan Peninsula and southern Baja California. The identified risk for EOITA in Mexico were: 15.6% and 4.8%, by natural and anthropic risk, respectively, while 18.5% presented simultaneous environmental, natural and anthropic risk. Overall, 28.1% of localities in Mexico presented a High/High risk for the establishment of influenza type A (area under the curve=0.923, P<0.001; GWR, r2=0.840, P<0.001; Moran’s I =0.79, P<0.001). Hence, these geospatial models were able to robustly estimate those areas susceptible to EOITA, where the results obtained show the relation between the geographical area and the different effects on health. The information obtained should help devising and directing strategies leading to efficient prevention and sound administration of both human and financial resources.


Vaccine ◽  
2021 ◽  
Vol 39 (9) ◽  
pp. 1428-1434
Author(s):  
Marissa B. Wilck ◽  
Z. Jin Xu ◽  
Jon E. Stek ◽  
Michelle G. Goveia ◽  
Andrew W. Lee

2021 ◽  
Vol 11 (1) ◽  
pp. 6
Author(s):  
Setiawandari Setiawandari ◽  
Eka Deviany Widyawaty

The immunizations that must be given to children include the Diphtheria Pertussis Tetatus-Hepatitis B-Hemophilus Influenza type B vaccine or better known as Pentabio DPT. The DTwP / HB / HiB vaccine is given to babies in 3 doses at 1 month intervals. This immunization caused a systemic reaction, one of which was a fever of 0.85% in the first 30 minutes and increased to 14.03% on the day after immunization. The purpose of this study was to determine the effectiveness of shallots (Allium ascalonicum L) in reducing the body temperature of feverish children after Pentabio DPT immunization. This type of research was quasi-experimental study, with pre and post test with control group design. The sample in this study were babies who received DPT immunization as many as 20 respondents. DPT Pentabio immunization was given a dose of 0.5 ml in the intervention group and the control group. The statistical test used was the T test. The results showed that there was a significant effect of shallots on in reducing the body temperature of feverish children after Pentabio DPT immunization, with a p-value of 0.000. Keywords: shallots; body temperature; fever; Pentabio DPT immunization ABSTRAK Imunisasi yang wajib diberikan kepada anak-anak diantaranya adalah vaksin Diphtheria Pertusis Tetatus-Hepatitis B-Hemophilus Influenza type B atau lebih dikenal dengan DPT Pentabio. Vaksin DTwP/HB/HiB diberikan kepada bayi sebanyak 3 dosis dengan interval 1 bulan. Imunisasi ini menimbulkan reaksi sistemik salah satunya berupa demam 0,85% pada 30 menit pertama dan meningkat menjadi 14,03% pada satu hari pasca imunisasi. Tujuan dari penelitian ini adalah mengetahui efektifitas bawang merah (Allium ascalonicum L) terhadap penurunan suhu tubuh anak demam pasca imunisasi DPT Pentabio. Jenis penelitian quasi eksperimen dengan pre and post test with control group design. Sampel pada penelitian ini adalah bayi yang mendapat imunisasi DPT sebanyak 20 orang responden. Pemberian imunisasi DPT PENTABIO Pentabio dosis 0,5 ml pada kelompok intervensi dan kelompok kontrol. Uji statistik yang digunakan adalah Uji T. Hasil penelitian menunjukkan ada pengaruh yang signifikan dari bawang merah dalam menurunkan suhu tubuh anak demam pasca imunisasi DPT Pentabio, dengan p-value 0,000. Kata kunci: bawang merah; suhu tubuh; demam; imunisasi DPT Pentabio


2021 ◽  
pp. 134-140
Author(s):  
Luca Ena ◽  
Vittorio Mazzarello ◽  
Marco Ferrari ◽  
Pasquale Ena

Erythema annulare centrifugum (EAC) is a rare erythema characterized by erythematous and urticarial papules or annular plaques that enlarges centrifugally. The lesions usually involve the thighs and the legs. Several disorders are occasionally associated with EAC, infections, including mycoses, bacteria, or viruses and drugs have also been regarded as possible causes of this eruption. We present a 42-year-old dark-skinned woman affected by recurrent EAC that appeared secondary to influenza type A (H1N1). Histopathology showed a superficial form of EAC. In our case, a previous cytomegalovirus and Epstein-Barr virus (EBV) infection were identified and no underlying other diseases were found. Clarithromycin with calcipotriol betamethasone treatment was temporarily efficacious. In the last 3 years, the lesions started to appear every 2 weeks and tended to regress with local treatment after a variable period. We believe that the latent cytomegalovirus and the reactivity induced by EBV combined with influenza can determine, in our case, a cell mediate cutaneous immune response, which leads to the peculiar inflammatory disease known as EAC.


2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Masaya M. Saito ◽  
Nobuo Hirotsu ◽  
Hiroka Hamada ◽  
Mio Takei ◽  
Keisuke Honda ◽  
...  

Abstract Background Influenza is a public health issue that needs to be addressed strategically. The assessment of detailed infectious profiles is an important part of this effort. Household transmission data play a key role in estimating such profiles. We used diagnostic and questionnaire-based data on influenza patients at a Japanese clinic to estimate the detailed infectious period (as well as incubation period, symptomatic and infectious periods, and extended infectious period after recovery) and the secondary attack ratio (SAR) of influenza for households of various sizes based on a modified Cauchemez-type model. Results The data were from enrolled patients with confirmed influenza who were treated at the Hirotsu Clinic (Kawasaki, Japan) with a neuraminidase inhibitor (NAI) during six northern hemisphere influenza seasons between 2010 and 2016. A total of 2342 outpatients, representing 1807 households, were included. For influenza type A, the average incubation period was 1.43 days (95% probability interval, 0.03–5.32 days). The estimated average symptomatic and infective period was 1.76 days (0.33–4.62 days); the extended infective period after recovery was 0.25 days. The estimated SAR rose from 20 to 32% as household size increased from 3 to 5. For influenza type B, the average incubation period, average symptomatic and infective period, and extended infective period were estimated as 1.66 days (0.21–4.61), 2.62 days (0.54–5.75) and 1.00 days, respectively. The SAR increased from 12 to 21% as household size increased from 3 to 5. Conclusion All estimated periods of influenza type B were longer than the corresponding periods for type A. However, the SAR for type B was less than that for type A. These results may reflect Japanese demographics and treatment policy. Understanding the infectious profiles of influenza is necessary for assessing public health measures.


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