UPDATE
I have tidied up this post to make it more readable. It really needed it. Both China and South Korea claim to have used chloroquine successfully.

Chloroquine and plasma from recovered patients are two possible treatments available in lieu of vaccine.


An Effective Treatment for Coronavirus (scientific paper)…
CitizenFreePress
March, 13 2020

Possible treatment using old malaria medication Chloroquine:

An Effective Treatment for Coronavirus (COVID-19)
Presented by: Thomas R. Broker, PhD (Stanford PhD, broker@uab.edu), James M. Todaro, MD (Columbia MD, jtodaro2@gmail.com) and Gregory J. Rigano, Esq. (grigano1@jhu.edu)
In consultation with Stanford University School of Medicine, UAB School of Medicine and National Academy of Sciences researchers.
March 13, 2020

Zitat

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Recent guidelines from South Korea and China report that chloroquine is an effective antiviral therapeutic treatment against Coronavirus Disease 2019. Use of chloroquine (tablets) is showing favorable outcomes in humans infected with Coronavirus including faster time to recovery and shorter hospital stay. US CDC research shows that chloroquine also has strong potential as a prophylactic (preventative) measure against coronavirus in the lab, while we wait for a vaccine to be developed. Chloroquine is an inexpensive, globally available drug that has been in widespread human use since 1945 against malaria, autoimmune and various other conditions.

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Spanish: https://docs.google.com/document/d/e/2PA...ypDOqKCZVyV/pub
Translation by: Celia Martínez-Aceves (Yale B.S. Candidate 2021; celia.martinez-aceves@yale.edu), Martín Martínez (MIT B.S. 2017 ; martin.martinez.mit@gmail.com)

English:
https://docs.google.com/document/d/e/2PA...AVjIL-7deJ7/pub


Information about using Chloroquine with Zinc found here:
Zinc inside a cell inhibits the virus from reproducing inside the cell.
Zinc requires an ionophores to enter cell.
Chloroquine is a zinc ionophore.

From NIH
Abstract
Send to Zhonghua Jie He He Hu Xi Za Zhi. 2020 Feb 20;43(0):E019. doi: 10.3760/cma.j.issn.1001-0939.2020.0019. [Epub ahead of print]
[Expert consensus on chloroquine phosphate for the treatment of novel coronavirus pneumonia].
[Article in Chinese; Abstract available in Chinese from the publisher]
multicenter collaboration group of Department of Science and Technology of Guangdong Province and Health Commission of Guangdong Province for chloroquine in the treatment of novel coronavirus pneumonia.
Abstractin English, Chinese

At the end of December 2019, a novel coronavirus (COVID-19) caused an outbreak in Wuhan, and has quickly spread to all provinces in China and 26 other countries around the world, leading to a serious situation for epidemic prevention. So far, there is still no specific medicine. Previous studies have shown that chloroquine phosphate (chloroquine) had a wide range of antiviral effects, including anti-coronavirus. Here we found that treating the patients diagnosed as novel coronavirus pneumonia with chloroquine might improve the success rate of treatment, shorten hospital stay and improve patient outcome. In order to guide and regulate the use of chloroquine in patients with novel coronavirus pneumonia, the multicenter collaboration group of Department of Science and Technology of Guangdong Province and Health Commission of Guangdong Province for chloroquine in the treatment of novel coronavirus pneumonia developed this expert consensus after extensive discussion. It recommended chloroquine phosphate tablet, 500mg twice per day for 10 days for patients diagnosed as mild, moderate and severe cases of novel coronavirus pneumonia and without contraindications to chloroquine.

KEYWORDS: Chloroquine; Novel coronavirus pneumonia

PMID: 32075365
DOI: 10.3760/cma.j.issn.1001-0939.2020.0019

https://www.ncbi.nlm.nih.gov/pubmed/32075365/

Info about Chloroquine here:
https://www.cdc.gov/malaria/resources/pd...Chloroquine.pdf