The woman's residence at Simei Street 1 is an active two-case dengue cluster.
The Environment and Forest ministry has also filed civil law suits against five oil palm companies allegedly responsible for some of last year's fires.
The total number of localities, which are still affected by dengue increased from 647 to 660 for Week 26.
Officials have warned of the risk of flooding and mudslides as they are expecting severe rainfall.
Ambassador Anil Kumar says Singapore wants Indonesia to act against firms responsible for haze crisis of last year.
The National Environment Agency (NEA) said that rainfall is expected to be above normal during the span from June to September.
The upward trend began in the last week of April with 794 cases.
According to the weather advisory, short showers are expected in the late morning and afternoon on five to seven days.
Stay indoors where possible and avoid heavy outdoor activities, Prime Minister Lee Hsien Loong says.
Thai health authorities say the number of women newly infected with HIV has drastically reduced.
Ministry of Health urges parents to get their children vaccinated as measles cases spike in Singapore
The director-general of health ministry, Noor Hisham Abdullah, says preventive measures are being taken.
The news of the arrival of Zika virus in Singapore spooks residents.
Inquiry finds the doctor at the Raffles hospital "disregarded the patient's wellbeing".
Mercury, the solar system's innermost planet, sailed across the face of the sun on Monday