The NEJM letter [1] this article is summarizing is only talking about their condition while in the hospital (that is, of the 215 tested, the 33 who tested positive didn’t show symptoms before being discharged (median length of stay is 2 days).
That letter cites an article[2], which found that of the 43 pregnancy patients who tested positive, 14 (32.6%) were asymptomatic when admitted. However, 10 of them developed symptoms during their stay in the hospital or shortly after being discharged. It doesn’t say how long they tracked patients, but at most, 4 of the 33 could have been asymptomatic.
IMHO, the letter is confusing at best, but more likely intentionally misleading. FWIW, I probably would have come to the same conclusion had I not spent ~45 minutes digging through citations...
That letter cites an article[2], which found that of the 43 pregnancy patients who tested positive, 14 (32.6%) were asymptomatic when admitted. However, 10 of them developed symptoms during their stay in the hospital or shortly after being discharged. It doesn’t say how long they tracked patients, but at most, 4 of the 33 could have been asymptomatic.
IMHO, the letter is confusing at best, but more likely intentionally misleading. FWIW, I probably would have come to the same conclusion had I not spent ~45 minutes digging through citations...
[1] https://www.nejm.org/doi/full/10.1056/NEJMc2009316?cookieSet... [2] https://www.sciencedirect.com/science/article/pii/S258993332...