What is the situation of dengue fever in Singapore now?

Dengue fever is called bone pain and blood heat in Singapore. By September 2, there had been 63 18 cases, resulting in 6 deaths. It was very serious some time ago, but it has improved recently.

The new cases of bone pain and fever decreased for 7 weeks.

● Cai Huiling

The number of new cases of bone pain decreased for 7 consecutive weeks, and remained below the alert level of 256 cases for 4 consecutive weeks.

Last week (as of September 1), there were new cases 192. However, this figure is still more than three times higher than the same period last year. The authorities appealed to the public to remain vigilant and not to take it lightly.

The Environment Bureau said yesterday that the decline in the number of cases showed that the efforts of inspectors and the public over the past few months had achieved initial results. The cooler weather is also one of the factors that reduce the number of cases.

Studies have shown that the reproduction of Aedes mosquitoes and the spread of osteopathy fever virus will indeed improve with the cold weather. Once the temperature drops below 15℃, it takes 4 1 day for mosquitoes to hatch into adults. But in Singapore on the equator, there are few such weather. If the average temperature is 25 degrees Celsius, the eggs of Aedes mosquitoes can hatch into mosquitoes in only 10 to1day.

However, the authorities stressed that the local climate is suitable for the spread of bone pain all year round, and the low temperature does not necessarily mean that the number of cases of bone pain will definitely decrease accordingly.

Dr. Huang Lijing, director of the Institute of Environmental Health, said that from 200 1 to 2003, the number of local cases of bone pain fever did decrease with the cold weather, and the number of cases seemed to be directly related to the temperature. However, such a relationship did not appear in 2004 and 2005. On the contrary, in these two years, even if the temperature drops, other factors, such as the type change of the popular osteopathy fever virus, can still make the number of cases continue to rise.

Therefore, the Environment Bureau appeals to the public to continue to strengthen mosquito control during this period. This will also help to prevent the severity of bone pain fever from coming back in the next hot weather.

Dr. Huang said that bone pain experts generally believe that suppressing the spread of the virus as much as possible during the remission period can make it easier for environmental personnel to control the spread of the disease in the coming high temperature weather, which is conducive to the growth of Aedes mosquitoes.

She said: "Basically, we want to keep the number of Aedes mosquitoes as low as possible and avoid a sudden doubling. The number of cases of bone pain is the same (need to be kept as low as possible). If there are not so many patients with osteopathy fever virus, the spread rate of the virus will be lower when the hot period comes. "

In 2004 165438+ 10 and 65438+2 months, the number of cases was still at a high level of about 280, resulting in the number of cases at the beginning of 2005 remaining at about 276. In the same period last year, most cases of bone pain and fever did not exceed 100.

In 2005, a serious osteopathy fever broke out in Singapore. At the worst, 7 13 cases occurred within one week. At that time, some hospitals were forced to postpone some non-emergency operations in order to give priority to patients with bone pain.

Judging from the current local situation, it remains to be seen whether the number of cases will rise again next year.

As of July this year, the authorities have inspected 3,289 mosquito breeding grounds at home, double the same period last year. The Environment Bureau reiterated that reducing the breeding grounds of Aedes mosquitoes is an important link to effectively control the spread of osteopathic pain.

As of yesterday, the most concentrated local cases were 3 1 Street and 34th Street in Ba Du, Bukit. As of the 3rd of this month, there have been 73 cases, which is the largest concentration of cases this year. In 2005, the bone pain and fever was the most serious, and the most concentrated bone pain and fever was 72 Street in Yishun, with 74 cases.

This year, the sixth 84-year-old man died of bone pain.

This year, there was the sixth death case of bone pain fever. The deceased was an 84-year-old European-Asian man with chronic diseases.

The Ministry of Health issued a statement yesterday saying that the deceased was admitted to the National University Hospital for medical treatment on the 22nd of last month because of abdominal and back pain. Tests showed that he was infected with bone pain and blood heat. During his stay in hospital, his condition deteriorated and he died on the 30th.

The Ministry of Health advises the public to seek medical advice as soon as possible when they are unwell and have a fever. When they are diagnosed with bone pain, they should rest more and ensure water supplement according to the doctor's instructions. Patients with bone pain or suspected cases should use mosquito repellent, mosquito incense or mosquito nets to prevent their families from being infected by mosquito bites. This will also help to break the transmission chain of osteopathy fever virus.

There were 77 cases in two months, and the bone pain and fever in the third street of Bukit Batu has been the most.

● Lin Peibi

In the past two months, more than 77 cases have occurred in the areas of 3 1 street, 32 street and 34 street in Bukit Batu, setting a new high, becoming the largest single bone pain and fever case concentration area over the years.

Starting from this weekend, the State Environmental Administration will double its manpower, that is, it will send 40 environmental inspectors to inspect 34 apartments and 2,735 families there every day. This is the third search operation launched by the authorities in this area since the first outbreak of osteodynia on July 5 this year. This round of action is expected to last for two weeks.

It is understood that in 2005, the local bone pain fever was the most serious, and the most concentrated place of bone pain fever was Yishun 72 Street. At that time, 74 cases were recorded.

In addition, according to the latest information on the website of the Environment Bureau, there were 22 cases and 65,438+02 cases in Buji Batu Middle/265,438+0 Street /3 Road and Buji Batu West 6 Road respectively, and sporadic cases also appeared in Buji Batu West 5 Road.

While the number of local cases of osteodynia has decreased, the number of cases of osteodynia in Bukit Batu has increased rather than decreased, which is worrying. As in other areas, environmental inspectors found that the main breeding place of Aedes mosquitoes is still home.

Satish Appoo, director of the Environmental Health Department of the Environment Bureau, said that in the past, there were no more than 30 cases of bone pain in Bukit Batu every year, but there were 88 cases in 2004. In 2005, it surged to 203 cases, 1 1 case concentration; Last year 122 cases, 5 cases were concentrated. This year, the situation is getting worse. As of the 3rd of this month, there have been 24/kloc-0 cases in this area, and there are as many as 2/kloc-0 cases.

The so-called case concentration refers to the place where at least two cases of bone pain occurred within 150 meters within two weeks.

Apu pointed out that according to the above data, the low "group immunity" of residents in Bukit Batu, coupled with the rampant Aedes albopictus species in this area, has become Aedes aegypti, which are the two major reasons for the high number of cases of osteopathy fever in this area.

The Environment Bureau also found that the proportion of Aedes aegypti found in Bukit Batu in 2003 did not exceed 1%, and this year the proportion rose to 66.4%.

Aedes aegypti has adapted to the urban environment and likes to breed indoors. It has a huge appetite and may bite two or three people at a time, thus accelerating the spread of bone pain and fever. In contrast, Aedes albopictus prefers the outdoor environment and only bites one person when attacking.

He said: "Interestingly, Aedes aegypti used to be active in the east, but in recent years, we found that their population in the east remained stable and there was a trend of gradual migration to the west. As for the reasons, further research is needed. "

Apu also stressed that although the weather has turned cold recently, the local climate is actually very suitable for Aedes mosquitoes to breed all year round, and people should not take it lightly during this period.

In an interview, Hong, a member of Fengjiaji constituency who is in charge of Bukit Batu affairs and also the chairman of Fengjiaji Town Council, revealed that the town Council spends more than 500,000 yuan each year and hires special personnel to conduct regular mosquito control inspections on more than 800 units under its jurisdiction.

In view of the deterioration of bone pain and fever in this area, he has asked the mosquito killing company to increase the number of inspections from once a week to two or three times. He and the grassroots will also strengthen cooperation with the staff of the Environment Bureau and continue to convey the message of preventing Aedes mosquitoes to the residents of the affected units.

Hong said: "The Environment Bureau found that home is still the biggest breeding ground for Aedes mosquitoes. We call on every resident to take responsibility and check whether there is water at home every day. Only when everyone cooperates can we hope to solve the problem. "

As of last Saturday, there were 63 18 cases of osteodynia this year, resulting in 6 deaths.

There are 10 cases concentrated in the local area.

(As of 4 pm yesterday)

Bukit Batu 1) 3 1 Street (blocks 356, 360, 362, 363, 364, 354, 369 and 370)/Bukit Batu 32 Street (blocks 3 12 and 3 13).

2) Bukit Batu Middle School (blocks 225, 26 and 27)/Bukit Batu 2 1 Street (2 12, 2 13, 2 14, 2 15, 2/Kloc)

3) No.6 road west of Bukit Batu (bid sections 128, 134, 135, 138, 139, 146): from/kloc-0.

4) Yalong Road/Yalong 9 Lane/1 1 Lane/1Lane 3: From 12.