[ToTo]

Great.. Learnt something new from you today.. I didn't hear anyone talking about a test was actually conducted in Singapore dorm...

Now, the conclusion from the report is,

Chemoprophylaxis with either oral hydroxychloroquine or povidone-iodine throat spray was superior to oral vitamin C in reducing SARS-CoV-2 infection in young and healthy men.

Also, this is the result which lead to the conclusion..

A total of 3037 asymptomatic participants (mean age, 33.0 years; all men) who were seronegative to SARS-CoV-2 at baseline were included in the primary analysis. Follow-up was nearly complete (99.6%). Compared with vitamin C, significant absolute risk reductions (%, 98.75% confidence interval) were observed for oral hydroxychloroquine (21%, 2–42%) and povidone-iodine throat spray (24%, 7–39%). No statistically significant differences were observed with oral zinc/vitamin C combination (23%, –5 to +41%) and ivermectin (5%, –10 to +22%).

Prof Tambaya admitted the biggest criticism of the study was the use of only 1 dose of 12mg Ivermectin (standard dose for treating parasites) instead of weekly like the rest over 6 weeks. 

That's why they conclude the results of Ivermectin is not statistically significant because it was poorly & under dosed! Get it?