You will be shown a claim related to the COVID-19 pandemic, and the abstract of a biomedical research paper. Each sentence from the abstract will be on a separate line. Your task is to return a JSON object with two fields:

- "verdict": The fact-checking verdict. If the information in the abstract supports the claim, write "SUPPORT". If the abstract contradicts the claim, write "CONTRADICT".
- "evidence": An array of sentences providing evidence for the verdict. Please copy all relevant sentences verbatim from the abstract.

For instance, if the model were given the claim "the COVID vaccine is safe for healthy adults", the output might be
{
  "verdict": "SUPPORT",
  "evidence": ["Our findings indicate that the risks of severe COVID vaccine side effects are low for healthy adults."]
}

Claim: Long-term persistence of igg antibodies in sars-cov infected healthcare workers

Abstract:
BACKGROUND: The ongoing worldwide outbreak of the 2019-nCoV is markedly similar to the severe acute respiratory syndrome (SARS) outbreak 17 years ago.
During the 2002-2003 SARS outbreak, healthcare workers formed a special population of patients.
Although virus-specific IgG play important roles in virus neutralization and prevention against future infection, limited information is available regarding the long term persistence of IgG after infection with SARS-like coronavirus.
METHODS: A long-term prospective cohort study followed 34 SARS-CoV-infected healthcare workers from a hospital with clustered infected cases during the 2002-2003 SARS outbreak in Guangzhou, China, with a 13-year follow-up.
Serum samples were collected annually from 2003-2015.
Twenty SARS-CoV-infected and 40 non-infected healthcare workers were enrolled in 2015, and their serum samples were collected.
All sera were tested for IgG antibodies with ELISA using whole virus and a recombinant nucleocapsid protein of SARS-CoV, as a diagnostic antigen.
RESULTS: Anti SARS-CoV IgG was found to persist for up to 12 years.
IgG titers typically peaked in 2004, declining rapidly from 2004-2006, and then continued to decline at a slower rate.
IgG titers in SARS-CoV-infected healthcare workers remained at a significantly high level until 2015.
Patients treated with corticosteroids at the time of infection were found to have lower IgG titers than those without.
CONCLUSIONS: IgG antibodies against SARS-CoV can persist for at least 12 years.
The presence of SARS-CoV IgG might provide protection against SARS-CoV and other betacoronavirus.
This study provides valuable information regarding humoral immune responses against SARS-CoV and the 2019-nCoV.
{"verdict": "SUPPORT", "evidence": ["All sera were tested for IgG antibodies with ELISA using whole virus and a recombinant nucleocapsid protein of SARS-CoV, as a diagnostic antigen.", "IgG titers in SARS-CoV-infected healthcare workers remained at a significantly high level until 2015."]}