Lots of disagreement on this topic,as I know you know, but others might not. The opinion of most infectious disease experts, like Fauci, is that "reinfection" is much more likely a function of testing accuracy of the viral PCR test, which is not particularly accurate (~30+% false negatives and some false positives). Scientifically, it simply makes no sense for a person who recovers from a viral infection to not then have the antibodies to be immune from reinfection, at least for some time, except for people with immunological issues, as was reported this past weekend in my post below - this was based on the best antibody test out there, now. Since this is a new virus, there are no guarantees that reinfection isn't possible, but it's not the way to bet. From the article you linked, below...
The Korea Centers for Disease Control and Prevention (KCDC) said in a statement a formal investigation was underway looking into dozens of patients that reportedly tested positive for the disease for a second time.
“While we are putting more weight on reactivation as the possible cause, we are conducting a comprehensive study on this,” KCDC Director-General Jeong Eun-kyeong said, according to Bloomberg. “There have been many cases when a patient during treatment will test negative one day and positive another.”
Similar reports have come out of China, where the virus emerged late last year, and Japan in February reported a woman tested positive for the coronavirus a second time.
But some researchers say reinfection is an unlikely explanation for patients who test positive twice, and note the possibility that testing errors, and releasing patients from hospitals too early, are more likely to be the cause of patients who retest positive.
“If you get an infection, your immune system is revved up against that virus,” Keiji Fukuda, director of Hong Kong University’s School of Public Health, told The Los Angeles Times in March. “To get reinfected again when you’re in that situation would be quite unusual unless your immune system was not functioning right.”
Rutgersguy wasn't posting about overall infection rates, he was posting about potential reinfection of a small number of previously infected people. Certainly, Singapore and Japan are seeing significant spikes, but South Korea tamped down a recent spike and is back down below 50 new cases per day. And Taiwan remains below 10 new cases per day.
Feel bad for my very good friend and his fiancee who left Jersey City as cases were rising quickly about 2 weeks ago and got the last flight to Singapore from the US and he just got out of the 14-day quarantine just in time for Singapore's spike. Their wedding is in Singapore in May - was originally going to go, but that's out the window now...