Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evaluating the Efficacy of Facebook's Vaccine Misinformation Content
  Removal Policies   Social media platforms have attempted to remove misinformation about vaccines
because it obstructs efforts to end the COVID-19 pandemic. We examined whether
Facebook's vaccine misinformation removal policies were effective. Posts and
engagements in anti-vaccine pages were reduced to 29% and 23% of pre-policy
levels, respectively, but recovered over the subsequent six months. Posts and
engagements in pro-vaccine pages were also reduced -- to 68% and 30% of
pre-policy levels, respectively. Low-credibility content became more prevalent
in anti-vaccine pages and groups, and high-credibility content became less
prevalent in pro-vaccine pages. Links between anti-vaccine pages and
coordinated inauthentic behavior were also reduced. Our results suggest that
Facebook's policies were only partially successful. Facebook's attempts at
self-regulation appear to have been resource intensive, and ineffective in the
long term.

35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph