With the exception of the one criuseship and one of the MLB teams, I don't recall hearing much about scores of breakthrough cases. International travel requires a negative test to re-enter. I would think you would be hearing about people getting stuck abroad. My luck it will be me though.
It happening, and our media letting us to hear about it, are two different things. There are articles out there, not many are covered by our big media outlets. I pasted a couple below from a quick search. The bolding isn't me it just copied that way.
John Rham
Chris Paul
Gleyber Torres
Unnamed American track and field athlete, another person attending the U.S. Olympic team trials in Eugene, Ore., and two members of the Ugandan Olympic delegation traveling to Tokyo for a pre-Games training camp.
Two passengers test positive for COVID on Celebrity Millennium 'fully vaccinated' cruise
Nearly 4,000 Breakthrough COVID Infections Have Now Been Reported in Mass.
Here is a prison study that was done
Among the 4638 persons who were tested during the study period, 2380 who had received at least one dose of a SARS-CoV-2 vaccine were included in the analysis (
Figure 1). Of these persons, 27 (1.13%) had positive results for SARS-CoV-2. Of the 8847 tests that were administered to incarcerated persons during the study period, 20 (0.22%; 95% confidence interval [CI], 0.14 to 0.36) were positive. Among 4140 tests administered to staff members who had been vaccinated, positive results were obtained on 7 tests (0.17%; 95% CI, 0.16 to 0.18). The incidence of positive tests per person tested was 20 of 1539 (1.3%; 95% CI, 0.8 to 2.0) among incarcerated persons and 7 of 841 (0.8%; 95% CI, 0.3 to 1.7) among staff members. All the cases of Covid-19 were asymptomatic.