| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T534 |
0-50 |
Sentence |
denotes |
Encouraging social distancing in local communities |
| T535 |
51-192 |
Sentence |
denotes |
Recent studies suggest that there is a large proportion of asymptomatic or mild-symptomatic cases, who can also spread the virus (Dong et al. |
| T536 |
193-214 |
Sentence |
denotes |
2020; Mizumoto et al. |
| T537 |
215-236 |
Sentence |
denotes |
2020; Nishiura et al. |
| T538 |
237-254 |
Sentence |
denotes |
2020; Wang et al. |
| T539 |
255-262 |
Sentence |
denotes |
2020a). |
| T540 |
263-378 |
Sentence |
denotes |
Thus, maintaining social distance is of crucial importance in order to curtail the local transmission of the virus. |
| T541 |
379-561 |
Sentence |
denotes |
The period from January 24 to 31, 2020, is the traditional Chinese Spring Festival holiday, when families are supposed to get together so that inter-city travel is usually much less. |
| T542 |
562-709 |
Sentence |
denotes |
People were frequently reminded by official media (via TV news and phone messages) and social media to stay at home and avoid gathering activities. |
| T543 |
710-842 |
Sentence |
denotes |
On January 26, China State Council extended this holiday to February 2 to delay people’s return travel and curtail the virus spread. |
| T544 |
843-1013 |
Sentence |
denotes |
Nevertheless, economic activities are still supposed to resume after the spring festival, bringing people back to workplaces, which may increase the risk of virus spread. |
| T545 |
1014-1305 |
Sentence |
denotes |
To help local residents keep social distance and decrease the risk of virus transmissions, many cities started to implement the “closed management of communities” and “family outdoor restrictions” policies since late January (Table 7), encouraging residents to restrict nonessential travels. |
| T546 |
1306-1762 |
Sentence |
denotes |
From January 28 to February 20, more than 250 prefecture-level cities in China implemented “closed management of communities,” which typically includes (1) keeping only one entrance for each community, (2) allowing only community residents to enter and exit the community, (3) checking body temperature for each entrant, (4) testing and quarantining cases that exhibit fever immediately, and (5) tracing and quarantining close contacts of suspicious cases. |
| T547 |
1763-1927 |
Sentence |
denotes |
Meanwhile, residents who had symptoms of fever or dry cough were required to report to the community and were quarantined and treated in special medical facilities. |
| T548 |
1928-2215 |
Sentence |
denotes |
Furthermore, local governments of 127 cities also imposed more stringent “family outdoor restrictions”—residents are confined or strongly encouraged to stay at home with limited exceptions, e.g., only one person in each family may go out for shopping for necessities once every 2 days24. |
| T549 |
2216-2333 |
Sentence |
denotes |
Exit permits were usually distributed to each family in advance and recollected when residents reenter the community. |
| T550 |
2334-2394 |
Sentence |
denotes |
Contacts of those patients were also traced and quarantined. |
| T551 |
2395-2551 |
Sentence |
denotes |
Table 7 summarizes the number of cities that had imposed “closed management of communities” or “family outdoor restrictions” by different dates in February. |
| T552 |
2552-2626 |
Sentence |
denotes |
Table 7 Number of cities with local quarantine measures by different dates |
| T553 |
2627-2692 |
Sentence |
denotes |
Date Closed management of communities Family outdoor restrictions |
| T554 |
2693-2708 |
Sentence |
denotes |
2020-02-01 10 1 |
| T555 |
2709-2724 |
Sentence |
denotes |
2020-02-02 20 6 |
| T556 |
2725-2741 |
Sentence |
denotes |
2020-02-03 33 16 |
| T557 |
2742-2758 |
Sentence |
denotes |
2020-02-04 63 38 |
| T558 |
2759-2776 |
Sentence |
denotes |
2020-02-05 111 63 |
| T559 |
2777-2794 |
Sentence |
denotes |
2020-02-06 155 88 |
| T560 |
2795-2812 |
Sentence |
denotes |
2020-02-07 179 92 |
| T561 |
2813-2830 |
Sentence |
denotes |
2020-02-08 187 98 |
| T562 |
2831-2849 |
Sentence |
denotes |
2020-02-09 196 102 |
| T563 |
2850-2868 |
Sentence |
denotes |
2020-02-10 215 104 |
| T564 |
2869-2887 |
Sentence |
denotes |
2020-02-11 227 105 |
| T565 |
2888-2906 |
Sentence |
denotes |
2020-02-12 234 108 |
| T566 |
2907-2925 |
Sentence |
denotes |
2020-02-13 234 109 |
| T567 |
2926-2944 |
Sentence |
denotes |
2020-02-14 235 111 |
| T568 |
2945-2963 |
Sentence |
denotes |
2020-02-15 237 111 |
| T569 |
2964-2982 |
Sentence |
denotes |
2020-02-16 237 122 |
| T570 |
2983-3001 |
Sentence |
denotes |
2020-02-17 237 122 |
| T571 |
3002-3020 |
Sentence |
denotes |
2020-02-18 238 122 |
| T572 |
3021-3039 |
Sentence |
denotes |
2020-02-19 238 122 |
| T573 |
3040-3059 |
Sentence |
denotes |
2020-02-20‡ 241 123 |
| T574 |
3060-3113 |
Sentence |
denotes |
‡No new cities adopt these measures after February 20 |
| T575 |
3114-3278 |
Sentence |
denotes |
In order to help inform evidence-based COVID-19 control measures, we examine the effect of these local quarantine measures in reducing the virus transmission rates. |
| T576 |
3279-3471 |
Sentence |
denotes |
Dummy variables for the presence of closed management of communities or family outdoor restrictions are created, and they are interacted with the number of infections in the preceding 2 weeks. |
