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Vaccine found effective against most severe type of pneumonia
Streptococcus pneumoniae (the pneumococcus) is estimated to cause over half of all pneumonia-related deaths in children under five years old.
Researchers have found in a new case study that a pneumococcal vaccine was effective at protecting children in Laos against the most severe type of pneumonia.
The research led by the Murdoch Children's Research Institute (MCRI) and published in The Lancet Regional Health -- Western Pacific, found the PCV13-vaccine reduced hypoxic pneumonia and pneumonia requiring oxygen support by 37 per cent.
MCRI Dr Cattram Nguyen said although pneumococcal vaccines were known to reduce severe cases of childhood pneumonia, no studies from Asia had measured their effectiveness until now.
The study involved 826 children, aged up to five years, admitted to hospital with pneumonia. PCV13 reduced hypoxic pneumonia and pneumonia requiring extra oxygen by 37 per cent.
Dr Nguyen said because pneumonia was a leading cause of childhood deaths in Laos, the PCV13 vaccine had great potential to alleviate this burden of disease on the most vulnerable. Pneumonia that requires oxygen therapy is one of the severest manifestations of pneumonia.
"Universal health care did not exist in Laos until recently, and supplementary oxygen treatment was prohibitively expensive for families," she said.
In October 2013, Laos introduced the PCV13 vaccine into its national childhood vaccination program, supported by Gavi, the Vaccine Alliance. But the Ministry of Health requested evidence of the health benefits of the vaccine to support its ongoing use.
MCRI Professor Fiona Russell said Asian countries have been very slow to introduce PCV13 into their national immunisation programs.
"These results provide a compelling argument to continue childhood PCV13 vaccination in Laos and for its introduction into similar countries with high death rates from pneumonia," she said.
Professor Russell said the study also described a simple, low-cost single hospital-based method to assess vaccine effectiveness that was feasible for other low and middle-income countries to adopt. Measuring the success of this vaccine would usually require thousands of cases collected over many years of surveillance, and often involving many hospitals, she said
"In this study, we enrolled children hospitalised with hypoxic and non-hypoxic pneumonia in a single hospital and compared pneumococcal vaccination rates between the two groups to determine vaccine effectiveness over about four years," she said.
Globally, lower respiratory infections, including pneumonia, are a leading cause of death in children under five years old, causing 800,000 deaths annually, predominantly in low- and middle-income countries.
https://www.sciencedirect.com/science/article/pii/S2666606520300146?via=ihub
Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email:Â editorial@medicaldialogues.in. Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751