health and science

Lincoln’s Covid-19 caseload continues to climb, with a total of 27 cases during the last two weeks in December — the same number as recorded over the preceding four months.

Forty-four Lincoln residents tested positive for Covid-during the four-week period starting the week of December 10. The largest two-week total before this was nine cases for the fortnight ending on April 25. As of December 31, Lincoln had 19 active cases — fewer than Carlisle but more than Concord, where fully 40% of the cases were in residents age 20 and younger.

Earlier in the pandemic, many Lincoln cases cropped up among elderly residents at The Commons and elsewhere in town. More recently, as in the rest of the country, the virus has affected a greater age range of Lincolnites and the method of spread has more often been within households.

“In the last few months, we have definitely seen an increase in the number of cases in the one-to-25-year-old age groups,” Public Health Nurse Tricia McGean said in an email to the Lincoln Squirrel. “College students socialize in groups and live in congregate group settings like dorms, and the virus is very happy to spread in these types of settings. We did not have the college-aged cases back in March and April, as most of them were sent home to learn remotely. The younger cases we’ve seen recently in the local elementary and middle schools are usually related to household spread. If there is a family of four or six, we can usually watch it spread to each person.

“The holidays have also been a factor in increased case numbers. Despite warnings from public health officials, many people chose to be with friends and family members outside of their households. I have seen a few Thanksgiving and Christmas gatherings result in a full family sweep of new Covid-positive cases,” McGean said.

There have been a few hospitalizations among the recent Lincoln cases, though these have been older adults and usually due to a comorbidity like a chronic respiratory disease.

On the bright side, “we have not seen any confirmed spread within the school community, so that’s fantastic news. Everyone is doing their job by keeping masked, maintaining social distance, and performing good hand hygiene, and we hope to get everyone back to school [this] week as planned,” McGean said. There have been no deaths or new cases at The Commons since December 23, and the facility expects to start its Covid-19 vaccine clinic for its residents as soon as this week.

Statewide, Lincoln is now in the moderate risk category, where it moved from low risk during the period from November 22 to December 5 (click here to see how the state’s risk map has evolved for towns since October 18).

Although vaccines are on the way for everyone, the immediate threat is very real, especially since Covid-19 is sneakily contagious. “The most infectious period of the virus is 48 hours prior to symptom onset, so by the time you get the headache, cough, and achy feeling, you have already unknowingly spread the virus,” McGean said.

Lincoln’s Covid-19 caseload has shot up recently, with 14 new cases in December thus far.

Thirteen of those cases are at The Commons in Lincoln, Public Health Nurse Tricia McGean told the Board of Selectmen on December 14. One resident there died of Covid-19 on December 13 — the pandemic’s first death in Lincoln since late May.

As of last night’s meeting, the town had recorded a total of 82 cases. Seven more cases have occurred at The Commons but were not counted toward Lincoln’s total because they were temporary rehabilitation patients transferred from facilities or homes in other towns, McGean said. The skilled nursing neighborhood has isolated Covid-19-positive residents in seven of the area’s 32 rooms rooms with a staff dedicated solely to their care, and staff in that portion of The Commons are tested every three days.

At the Lincoln School, which has been doing both five-day-a-week in-person and fully remote instruction, there are four classrooms now in quarantine (two in first grade and one each in second and fourth grade). Everyone in those classes must stay home for 14 days.

“It’s a really important time to stay in your bubble and stay in your household,” including avoiding extended family members who don’t live with you, McGean said. “It’s spreading like wildfire, especially through families, where one parent gets it, then the other, and then all the kids.” Fortunately, most of the Lincolnites who have gotten ill have experienced mild to moderate symptoms, especially aches and severe headaches, she added.

Although vaccines are starting to be distributed to health-care workers and other top-priority segments of the population, the general public won’t have access here until April or May, McGean said. The primary means of vaccine distribution will be through primary care providers and pharmacies. Officials are starting to plan how to vaccinate residents who are unable to get to either of those places.

“We’d love to be in a position to tell residents that [the town] can vaccinate 6,000 people but clearly that’s beyond our capacity,” she said.

Lincoln Covid cases week by week (click to enlarge).

After a relatively quiet summer pandemic-wise, cases of Covid-19 in Lincoln have been trending upward in recent weeks.

The five cases last week were the most in one week since April 18, which tied for Lincoln’s pandemic’s weekly high with six cases. There were four cases reported for the week of November 12; three of them were in their 50s and one in his or her 20s, according to Public Health Nurse Tricia McGean. She didn’t have demographic information for the latest batch of residents who tested positive, but said that none were in a school or group living facility such as The Commons.

Cumulative Covid-19 cases in Lincoln

The accompanying graphs were made from the town’s Covid-19 page, which includes some information for surrounding towns and the state. Households rather than external group settings have been by far the most commons means of transmission since mid-October, according to the chart on that page showing active Covid cluster by exposure setting type.

Town health officials reported three new Covid-19 cases in Lincoln during the week ending September 30. All three are members of the same household and are not at The Commons, which was an early hotspot but has not seen any new cases since May, public health nurse Tricia McGean said.

This is the largest number of cases in a week since August 5. In the seven weeks from then until the most recent count, there were only four new cases in town.

The new Covid-19 cases are separate from those reported more recently in two at Hanscom Middle School  (cases on Hanscom Air Force Base are recorded as being in Bedford, not Lincoln). As a result of the positive tests there, 23 students and six staff members are now working remotely during their period of quarantine, Superintendent of Schools Becky McFall said on Tuesday.