This includes two files:

-One dataset includes details about the online newspaper articles about Quinvaxem, a 5-in-1 vaccine used in Expanded Programme on Immunization in Vietnam. It includes the names of articles, publication dates and original webpages which the author retrieved the articles from. 

- The coding framework used for categorizing articles. This was built based on codebooks used in previous studies about vaccine media analysis. It was piloted and tested for interrater reliability. 

1. Media article list: We performed a search using Google Engine to screen Vietnamese online articles about Quinvaxem- a 5-in-1 vaccine used in the Expanded Programme on Immunization in Vietnam in 4 periods:

• June 2010–December 2012
• December 2012–June 2013
• June 2013–December 2013
• December 2017–May 2018

We used the following keywords in Vietnamese: Quinvaxem, 5-in-1 vaccine, Hib vaccine. We only included news articles on news websites with a minimum of 100 words about Quinvaxem.

2. Coding frameworks: 

The coding framework was built based on codebooks used in previous studies about vaccine media analysis. It was piloted and tested for interrater reliability. 

Microsoft Excel, Microsoft Word