Sentence examples similar to occurrences were infrequent from inspiring English sources

Adverse effects were infrequent.

Breaks were infrequent.

Strikes were infrequent.

Systemic shocks were infrequent.

Microglia/macrophages were infrequent.

Side-effects were infrequent.

Public transportation is infrequent.

Droughts are infrequent.

Doors are infrequent.

Diving is infrequent.

Complications are infrequent.