The phrase "activities were halted" is correct and usable in written English.
It can be used to indicate that certain actions or tasks have been stopped or suspended, often due to external circumstances.
Example: "Due to the severe weather conditions, all outdoor activities were halted for the safety of participants."
Alternatives: "activities were suspended" or "activities were stopped."
Following the attack, Beni's civil society leaders declared a period of mourning, and most Ebola response activities were halted.
Following a baseline assessment of 201 enrolled parents in July 2014, all program and study activities were halted due to the outbreak of EVD.
During the last shutdown in 2013, when Trump was still a private citizen, he tweeted that his sense was "that people are far angrier at the President than they are at Congress re the shutdown — an interesting turn!" This is the first government shutdown since 2013, when federal government activities were halted for 16 days.
We therefore explored the probability of elimination in the 2 years following a 2 or 6-month period without any detected cases, whereupon vaccination activities were halted, or continued for the 2-year duration.
If this situation does not hold, then it is possible to find another larger (theta) such that the searching activities are halted.
The Palestinians have declined to resume talks unless settlement activity is halted.
The results from enzyme kinetics of PREP variants also support this hypothesis: When loop A is (1) locked to loop B through a disulphide bridge, all enzyme activity is halted, (2) nicked, enzyme activity is increased, and (3) removed, enzyme activity is only reduced.
The study showed that virus activity was halted in 36% of the patients receiving only the two antiviral medications over 24 weeks of treatment.
This seizure-like activity was halted by changing the medium after 3 hr (Richichi et al., 2008).
After each treatment and before harvest of cells, transcription activity was halted by adding a stop solution [ 66].
