That other employee is believed to have picked up the disease after working on the Liberian-flagged cargo ship named the Sofrana Surville, on Tuesday, October 13 - the day after it arrived in Auckland.
It had sailed from Papua New Guinea, to the Solomon Islands, to Brisbane, to Tauranga and then to Auckland where it picked up eight crew members from the Philippines who flew into the country a few days earlier, and spent a brief period of isolation in Auckland's Novotel hotel.
McVicker said his project manager, who was the only one to come into close contact with the supplier, was told he needed to self-isolate and get a test - which has since come back negative.
The rest of the company's staff were contacted yesterday and told they also needed to be tested. They were still awaiting results.
McVicker said yesterday morning they shut down the Henderson operation for deep cleaning and while staff awaited test results.
Another person, also thought to be a colleague of the man who worked on the Sofrana Surville, has also tested positive for Covid-19.
The man's two colleagues visited The Malt bar in Greenhithe, Snap Fitness in Browns Bay and Burnsco Gulf Harbour before testing positive on Auckland's North Shore.
The Malt and Snap Fitness both closed their doors for the week for deep cleaning.
Snap Fitness general manager Brendan Hurrell said Auckland Regional Public Health got in touch yesterday to inform them a person attended one of their boot camps on Browns Bay Beach and then spent an hour at the Browns Bay gym last Saturday while infectious but not symptomatic.
He said the 10 people who were at the boot camp, including the Browns Bay club's manager and a personal trainer, were all classified as close contacts and had to self isolate for 14 days. The staff members were still waiting for the results of their first test.
Those who were at the gym between 10.30am and midnight were classed as casual contacts and were asked to get a test and then self-isolate at home until a negative result was returned.
Hurrell said while the gym was not required to close, they did so as a precaution.
"I didn't want to take any risks with this," he said."The reason we're doing this is to make sure that people that were there get tested. Also, we're a business and we don't want our members to fear coming back to the club."
Barring further developments, he said the gym would re-open at midday tomorrow after three deep cleans and a disinfectant fogging of the entire club.
An Auckland primary school teacher is also waiting on her Covid-19 test results after finding she had a family connection to the man.
Massey Primary School principal Bruce Barnes said the relief teacher was teaching middle school students yesterday when she was told she had been exposed to the virus.
"She was not symptomatic at all, she said it was only brief contact she would have had with him," he said.
The teacher immediately left the school and sought a swab test, Barnes said.
Barnes today told the Herald they were still waiting for the results of the test and had received no further contact from the Ministry of Health.
Since students returned to school after lockdown the school had been thoroughly cleaned every night, he said.
Barnes said cleaners wiped down door handles and sanitised every surface each night.
