We study 86 pneumonia patients from 4-15 years old who were admitted to the Pediatric Department of the Hue Central Hospital, Thua Thien Hue province, Viet Nam over 14 months (from April 2004 to June 2005). Detection of anti- M.pneumoniae IgM of these patients, 27 cases have positive tests (31.4%).There was no statistic difference between male and female, urban area and countryside. The M.pneumoniae pneumonias were detected throughout the year but predominantly from April to June (31.5%) by admission. The results of this study showed some clinical features that could be frequently happened: cough, expectorant, mild fever (< 39oC), the white blood cells count less than 15,000 per mm3 (83.3%). The X ray of lungs are frequent the inertial and alveolar infiltration (54.2%). M.pneumoniae-related pneumonia were treated successfully with macrolide antibiotics.
Pneumonia, Mycoplasma ; Child ; Epidemiology

Background: Avian influenza (AI) is a contagious disease that causes illness and death in poultry and humans. High pathogenicity AI (HPAI) H5N6 outbreaks commonly occur in Quang Ninh province bordering China. In June 2021, the first HPAI H5N8 outbreak occurred at a Quang Ninh chicken farm. Objectives: This study examined the risk factors associated with HPAI H5N6 and H5N8 outbreaks in Quang Ninh. Methods: A retrospective case-control study was conducted in Quang Ninh from Nov 2021 to Jan 2022. The cases were households with susceptible poultry with two or more clinical signs and tested positive by real-time reverse transcription polymerase chain reaction. The controls were households in the same village as the cases but did not show clinical symptoms of the disease. Logistic regression models were constructed to assess the risk factors associated with HPAI outbreaks at the household level. Results: There were 38 cases with H5N6 clade 2.3.4.4h viruses (n = 35) and H5N8 clade 2.3.4.4b viruses (n = 3). Compared to the 112 controls, raising poultry in uncovered or partially covered ponds (odds ratio [OR], 7.52; 95% confidence interval [CI], 1.44–39.27), poultry traders visiting the farm (OR, 8.66; 95% CI, 2.7–27.69), farms with 50–2,000 birds (OR, 3.00; 95% CI, 1.06–8-51), and farms with ≥ 2,000 birds (OR, 11.35; 95% CI, 3.07–41.94) were significantly associated with HPAI outbreaks. Conclusions Combining biosecurity measures, such as restricting visitor entry and vaccination in farms with more than 50 birds, can enhance the control and prevention of HPAI in Quang Ninh and its spread across borders.