Mr Rowley then visited Boots at around midday before going back to his house half an hour later.
She said: "The staff here at Salisbury District Hospital worked tirelessly to save Dawn".
Dr Christine Blanshard, medical director at Salisbury District Hospital where Ms Sturgess died, said it was "desperately sad" and she expressed condolences to the 44-year-old's family.
Queen Elizabeth Gardens is just a four-minute walk away from the bench outside The Maltings shopping centre where the Skripals were found poisoned earlier this year.
He also said people in five locations between 22:00 BST on 29 June and 18:30 on 30 June continue to follow advice, namely: "Wash your clothes in a washing machine and to keep your items double-bagged and securely fastened, if they are dry-clean only".
London's Metropolitan Police force said the case had become a murder investigation now that 44-year-old Dawn Sturgess had died in a hospital in Salisbury.
"It is now time that the Russian state comes forward and explains exactly what has gone on", he said.
'Again for this particular incident we need to learn more and let the police do their work'.
Kremlin spokesman Dmitry Peskov described the case as "very worrying" but said Russian Federation had no information "about what substances were used and how they were used".
'There is no evidence at this point that the two individuals hurt by this incident visited any of the areas that the Skripals visited.
"I want to take the opportunity to say to everyone, but especially local people, that the risk to the public remains very low", he said.
Basu said the Met's thoughts were also with Rowley's family as he fights for his life. Officials say the search and cleanup operation will take weeks or even months to complete.
"The police officer who was transferred to Salisbury District Hospital this evening has been tested and does not require any treatment".
The mother of three was admitted to hospital after falling ill at her partner's home in Amesbury, near Salisbury, last Saturday.
British police officers stand facing a residential property in Amesbury, England, Wednesday, July 4, 2018.